展開 ⇄ 因数分解
暗記
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(x+1)²
x²+2x+1
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(x+1)(x+2)
x²+3x+2
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(x+1)(x+3)
x²+4x+3
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(x+1)(x+4)
x²+5x+4
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(x+1)(x+5)
x²+6x+5
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(x+1)(x+6)
x²+7x+6
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(x+1)(x+7)
x²+8x+7
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(x+1)(x+8)
x²+9x+8
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(x+1)(x+9)
x²+10x+9
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(x+2)(x+1)
x²+3x+2
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(x+2)²
x²+4x+4
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(x+2)(x+3)
x²+5x+6
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(x+2)(x+4)
x²+6x+8
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(x+2)(x+5)
x²+7x+10
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(x+2)(x+6)
x²+8x+12
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(x+2)(x+7)
x²+9x+14
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(x+2)(x+8)
x²+10x+16
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(x+2)(x+9)
x²+11x+18
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(x+3)(x+1)
x²+4x+3
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(x+3)(x+2)
x²+5x+6
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(x+3)²
x²+6x+9
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(x+3)(x+4)
x²+7x+12
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(x+3)(x+5)
x²+8x+15
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(x+3)(x+6)
x²+9x+18
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(x+3)(x+7)
x²+10x+21
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(x+3)(x+8)
x²+11x+24
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(x+3)(x+9)
x²+12x+27
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(x+4)(x+1)
x²+5x+4
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(x+4)(x+2)
x²+6x+8
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(x+4)(x+3)
x²+7x+12
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(x+4)²
x²+8x+16
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(x+4)(x+5)
x²+9x+20
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(x+4)(x+6)
x²+10x+24
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(x+4)(x+7)
x²+11x+28
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(x+4)(x+8)
x²+12x+32
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(x+4)(x+9)
x²+13x+36
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(x+5)(x+1)
x²+6x+5
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(x+5)(x+2)
x²+7x+10
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(x+5)(x+3)
x²+8x+15
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(x+5)(x+4)
x²+9x+20
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(x+5)²
x²+10x+25
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(x+5)(x+6)
x²+11x+30
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(x+5)(x+7)
x²+12x+35
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(x+5)(x+8)
x²+13x+40
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(x+5)(x+9)
x²+14x+45
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(x+6)(x+1)
x²+7x+6
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(x+6)(x+2)
x²+8x+12
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(x+6)(x+3)
x²+9x+18
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(x+6)(x+4)
x²+10x+24
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(x+6)(x+5)
x²+11x+30
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(x+6)²
x²+12x+36
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(x+6)(x+7)
x²+13x+42
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(x+6)(x+8)
x²+14x+48
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(x+6)(x+9)
x²+15x+54
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(x+7)(x+1)
x²+8x+7
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(x+7)(x+2)
x²+9x+14
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(x+7)(x+3)
x²+10x+21
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(x+7)(x+4)
x²+11x+28
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(x+7)(x+5)
x²+12x+35
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(x+7)(x+6)
x²+13x+42
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(x+7)²
x²+14x+49
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(x+7)(x+8)
x²+15x+56
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(x+7)(x+9)
x²+16x+63
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(x+8)(x+1)
x²+9x+8
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(x+8)(x+2)
x²+10x+16
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(x+8)(x+3)
x²+11x+24
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(x+8)(x+4)
x²+12x+32
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(x+8)(x+5)
x²+13x+40
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(x+8)(x+6)
x²+14x+48
-
(x+8)(x+7)
x²+15x+56
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(x+8)²
x²+16x+64
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(x+8)(x+9)
x²+17x+72
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(x+9)(x+1)
x²+10x+9
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(x+9)(x+2)
x²+11x+18
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(x+9)(x+3)
x²+12x+27
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(x+9)(x+4)
x²+13x+36
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(x+9)(x+5)
x²+14x+45
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(x+9)(x+6)
x²+15x+54
-
(x+9)(x+7)
x²+16x+63
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(x+9)(x+8)
x²+17x+72
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(x+9)²
x²+18x+81
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(x+1)(x-1)
x²-1
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(x+1)(x-2)
x²-x-2
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(x+1)(x-3)
x²-2x-3
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(x+1)(x-4)
x²-3x-4
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(x+1)(x-5)
x²-4x-5
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(x+1)(x-6)
x²-5x-6
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(x+1)(x-7)
x²-6x-7
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(x+1)(x-8)
x²-7x-8
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(x+1)(x-9)
x²-8x-9
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(x+2)(x-1)
x²+x-2
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(x+2)(x-2)
x²-4
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(x+2)(x-3)
x²-x-6
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(x+2)(x-4)
x²-2x-8
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(x+2)(x-5)
x²-3x-10
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(x+2)(x-6)
x²-4x-12
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(x+2)(x-7)
x²-5x-14
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(x+2)(x-8)
x²-6x-16
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(x+2)(x-9)
x²-7x-18
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(x+3)(x-1)
x²+2x-3
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(x+3)(x-2)
x²+x-6
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(x+3)(x-3)
x²-9
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(x+3)(x-4)
x²-x-12
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(x+3)(x-5)
x²-2x-15
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(x+3)(x-6)
x²-3x-18
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(x+3)(x-7)
x²-4x-21
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(x+3)(x-8)
x²-5x-24
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(x+3)(x-9)
x²-6x-27
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(x+4)(x-1)
x²+3x-4
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(x+4)(x-2)
x²+2x-8
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(x+4)(x-3)
x²+x-12
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(x+4)(x-4)
x²-16
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(x+4)(x-5)
x²-x-20
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(x+4)(x-6)
x²-2x-24
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(x+4)(x-7)
x²-3x-28
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(x+4)(x-8)
x²-4x-32
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(x+4)(x-9)
x²-5x-36
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(x+5)(x-1)
x²+4x-5
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(x+5)(x-2)
x²+3x-10
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(x+5)(x-3)
x²+2x-15
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(x+5)(x-4)
x²+x-20
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(x+5)(x-5)
x²-25
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(x+5)(x-6)
x²-x-30
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(x+5)(x-7)
x²-2x-35
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(x+5)(x-8)
x²-3x-40
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(x+5)(x-9)
x²-4x-45
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(x+6)(x-1)
x²+5x-6
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(x+6)(x-2)
x²+4x-12
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(x+6)(x-3)
x²+3x-18
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(x+6)(x-4)
x²+2x-24
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(x+6)(x-5)
x²+x-30
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(x+6)(x-6)
x²-36
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(x+6)(x-7)
x²-x-42
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(x+6)(x-8)
x²-2x-48
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(x+6)(x-9)
x²-3x-54
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(x+7)(x-1)
x²+6x-7
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(x+7)(x-2)
x²+5x-14
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(x+7)(x-3)
x²+4x-21
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(x+7)(x-4)
x²+3x-28
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(x+7)(x-5)
x²+2x-35
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(x+7)(x-6)
x²+x-42
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(x+7)(x-7)
x²-49
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(x+7)(x-8)
x²-x-56
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(x+7)(x-9)
x²-2x-63
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(x+8)(x-1)
x²+7x-8
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(x+8)(x-2)
x²+6x-16
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(x+8)(x-3)
x²+5x-24
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(x+8)(x-4)
x²+4x-32
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(x+8)(x-5)
x²+3x-40
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(x+8)(x-6)
x²+2x-48
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(x+8)(x-7)
x²+x-56
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(x+8)(x-8)
x²-64
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(x+8)(x-9)
x²-x-72
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(x+9)(x-1)
x²+8x-9
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(x+9)(x-2)
x²+7x-18
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(x+9)(x-3)
x²+6x-27
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(x+9)(x-4)
x²+5x-36
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(x+9)(x-5)
x²+4x-45
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(x+9)(x-6)
x²+3x-54
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(x+9)(x-7)
x²+2x-63
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(x+9)(x-8)
x²+x-72
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(x+9)(x-9)
x²-81
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(x-1)(x+1)
x²-1
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(x-1)(x+2)
x²+x-2
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(x-1)(x+3)
x²+2x-3
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(x-1)(x+4)
x²+3x-4
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(x-1)(x+5)
x²+4x-5
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(x-1)(x+6)
x²+5x-6
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(x-1)(x+7)
x²+6x-7
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(x-1)(x+8)
x²+7x-8
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(x-1)(x+9)
x²+8x-9
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(x-2)(x+1)
x²-x-2
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(x-2)(x+2)
x²-4
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(x-2)(x+3)
x²+x-6
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(x-2)(x+4)
x²+2x-8
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(x-2)(x+5)
x²+3x-10
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(x-2)(x+6)
x²+4x-12
-
(x-2)(x+7)
x²+5x-14
-
(x-2)(x+8)
x²+6x-16
-
(x-2)(x+9)
x²+7x-18
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(x-3)(x+1)
x²-2x-3
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(x-3)(x+2)
x²-x-6
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(x-3)(x+3)
x²-9
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(x-3)(x+4)
x²+x-12
-
(x-3)(x+5)
x²+2x-15
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(x-3)(x+6)
x²+3x-18
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(x-3)(x+7)
x²+4x-21
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(x-3)(x+8)
x²+5x-24
-
(x-3)(x+9)
x²+6x-27
-
(x-4)(x+1)
x²-3x-4
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(x-4)(x+2)
x²-2x-8
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(x-4)(x+3)
x²-x-12
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(x-4)(x+4)
x²-16
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(x-4)(x+5)
x²+x-20
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(x-4)(x+6)
x²+2x-24
-
(x-4)(x+7)
x²+3x-28
-
(x-4)(x+8)
x²+4x-32
-
(x-4)(x+9)
x²+5x-36
-
(x-5)(x+1)
x²-4x-5
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(x-5)(x+2)
x²-3x-10
-
(x-5)(x+3)
x²-2x-15
-
(x-5)(x+4)
x²-x-20
-
(x-5)(x+5)
x²-25
-
(x-5)(x+6)
x²+x-30
-
(x-5)(x+7)
x²+2x-35
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(x-5)(x+8)
x²+3x-40
-
(x-5)(x+9)
x²+4x-45
-
(x-6)(x+1)
x²-5x-6
-
(x-6)(x+2)
x²-4x-12
-
(x-6)(x+3)
x²-3x-18
-
(x-6)(x+4)
x²-2x-24
-
(x-6)(x+5)
x²-x-30
-
(x-6)(x+6)
x²-36
-
(x-6)(x+7)
x²+x-42
-
(x-6)(x+8)
x²+2x-48
-
(x-6)(x+9)
x²+3x-54
-
(x-7)(x+1)
x²-6x-7
-
(x-7)(x+2)
x²-5x-14
-
(x-7)(x+3)
x²-4x-21
-
(x-7)(x+4)
x²-3x-28
-
(x-7)(x+5)
x²-2x-35
-
(x-7)(x+6)
x²-x-42
-
(x-7)(x+7)
x²-49
-
(x-7)(x+8)
x²+x-56
-
(x-7)(x+9)
x²+2x-63
-
(x-8)(x+1)
x²-7x-8
-
(x-8)(x+2)
x²-6x-16
-
(x-8)(x+3)
x²-5x-24
-
(x-8)(x+4)
x²-4x-32
-
(x-8)(x+5)
x²-3x-40
-
(x-8)(x+6)
x²-2x-48
-
(x-8)(x+7)
x²-x-56
-
(x-8)(x+8)
x²-64
-
(x-8)(x+9)
x²+x-72
-
(x-9)(x+1)
x²-8x-9
-
(x-9)(x+2)
x²-7x-18
-
(x-9)(x+3)
x²-6x-27
-
(x-9)(x+4)
x²-5x-36
-
(x-9)(x+5)
x²-4x-45
-
(x-9)(x+6)
x²-3x-54
-
(x-9)(x+7)
x²-2x-63
-
(x-9)(x+8)
x²-x-72
-
(x-9)(x+9)
x²-81
-
(x-1)²
x²-2x+1
-
(x-1)(x-2)
x²-3x+2
-
(x-1)(x-3)
x²-4x+3
-
(x-1)(x-4)
x²-5x+4
-
(x-1)(x-5)
x²-6x+5
-
(x-1)(x-6)
x²-7x+6
-
(x-1)(x-7)
x²-8x+7
-
(x-1)(x-8)
x²-9x+8
-
(x-1)(x-9)
x²-10x+9
-
(x-2)(x-1)
x²-3x+2
-
(x-2)²
x²-4x+4
-
(x-2)(x-3)
x²-5x+6
-
(x-2)(x-4)
x²-6x+8
-
(x-2)(x-5)
x²-7x+10
-
(x-2)(x-6)
x²-8x+12
-
(x-2)(x-7)
x²-9x+14
-
(x-2)(x-8)
x²-10x+16
-
(x-2)(x-9)
x²-11x+18
-
(x-3)(x-1)
x²-4x+3
-
(x-3)(x-2)
x²-5x+6
-
(x-3)²
x²-6x+9
-
(x-3)(x-4)
x²-7x+12
-
(x-3)(x-5)
x²-8x+15
-
(x-3)(x-6)
x²-9x+18
-
(x-3)(x-7)
x²-10x+21
-
(x-3)(x-8)
x²-11x+24
-
(x-3)(x-9)
x²-12x+27
-
(x-4)(x-1)
x²-5x+4
-
(x-4)(x-2)
x²-6x+8
-
(x-4)(x-3)
x²-7x+12
-
(x-4)²
x²-8x+16
-
(x-4)(x-5)
x²-9x+20
-
(x-4)(x-6)
x²-10x+24
-
(x-4)(x-7)
x²-11x+28
-
(x-4)(x-8)
x²-12x+32
-
(x-4)(x-9)
x²-13x+36
-
(x-5)(x-1)
x²-6x+5
-
(x-5)(x-2)
x²-7x+10
-
(x-5)(x-3)
x²-8x+15
-
(x-5)(x-4)
x²-9x+20
-
(x-5)²
x²-10x+25
-
(x-5)(x-6)
x²-11x+30
-
(x-5)(x-7)
x²-12x+35
-
(x-5)(x-8)
x²-13x+40
-
(x-5)(x-9)
x²-14x+45
-
(x-6)(x-1)
x²-7x+6
-
(x-6)(x-2)
x²-8x+12
-
(x-6)(x-3)
x²-9x+18
-
(x-6)(x-4)
x²-10x+24
-
(x-6)(x-5)
x²-11x+30
-
(x-6)²
x²-12x+36
-
(x-6)(x-7)
x²-13x+42
-
(x-6)(x-8)
x²-14x+48
-
(x-6)(x-9)
x²-15x+54
-
(x-7)(x-1)
x²-8x+7
-
(x-7)(x-2)
x²-9x+14
-
(x-7)(x-3)
x²-10x+21
-
(x-7)(x-4)
x²-11x+28
-
(x-7)(x-5)
x²-12x+35
-
(x-7)(x-6)
x²-13x+42
-
(x-7)²
x²-14x+49
-
(x-7)(x-8)
x²-15x+56
-
(x-7)(x-9)
x²-16x+63
-
(x-8)(x-1)
x²-9x+8
-
(x-8)(x-2)
x²-10x+16
-
(x-8)(x-3)
x²-11x+24
-
(x-8)(x-4)
x²-12x+32
-
(x-8)(x-5)
x²-13x+40
-
(x-8)(x-6)
x²-14x+48
-
(x-8)(x-7)
x²-15x+56
-
(x-8)²
x²-16x+64
-
(x-8)(x-9)
x²-17x+72
-
(x-9)(x-1)
x²-10x+9
-
(x-9)(x-2)
x²-11x+18
-
(x-9)(x-3)
x²-12x+27
-
(x-9)(x-4)
x²-13x+36
-
(x-9)(x-5)
x²-14x+45
-
(x-9)(x-6)
x²-15x+54
-
(x-9)(x-7)
x²-16x+63
-
(x-9)(x-8)
x²-17x+72
-
(x-9)²
x²-18x+81
-
(x±〇)(x±〇) の形の展開の練習です。〇は1ケタの自然数。
裏返せば因数分解の練習になります。
324問もあるので飽きたら途中で打ち切ってくださいね。