中3
因数分解 乗法公式_1-2
次の式を因数分解せよ。
x2-3x+2
(x-1)(x-2)
x2-4x+3
(x-1)(x-3)
a2-6a+5
(a-1)(a-5)
a2-5a+6
(a-2)(a-3)
x2-7x+12
(x-3)(x-4)
y2-10y+24
(y-4)(y-6)
b2-8b+7
(b-1)(b-7)
c2-10c+9
(c-1)(c-9)
次の式を因数分解せよ。
x2-x-2
(x+1)(x-2)
x2+2x-3
(x-1)(x+3)
a2-3a-4
(a+1)(a-4)
a2-a-12
(a-4)(a+3)
x2+x-6
(x-2)(x+3)
a2+2a-8
(a-2)(a+4)
x2-2x-15
(x+3)(x-5)
a2+4a-5
(a-1)(a+5)
次の式を因数分解せよ。
x2-2x-168
(x+12)(x-14)
a2+18a+72
(a+6)(a+12)
a2-21a+108
(a-9)(a-12)
x2+2x-288
(x-16)(x+18)
x2-4xy-192y2
(x+12y)(x-16y)
a2+4ab-480b2
(a-20b)(a+24b)
x2-2xy-960y2
(x+30y)(x-32y)
x2+xy-272y2
(x-16y)(x+17y)
解答 表示
(x-1)(x-2)
(x-1)(x-3)
(a-1)(a-5)
(a-2)(a-3)
(x-3)(x-4)
(y-4)(y-6)
(b-1)(b-7)
(c-1)(c-9)
(x+1)(x-2)
(x-1)(x+3)
(a+1)(a-4)
(a-4)(a+3)
(x-2)(x+3)
(a-2)(a+4)
(x+3)(x-5)
(a-1)(a+5)
(x+12)(x-14)
(a+6)(a+12)
(a-9)(a-12)
(x-16)(x+18)
(x+12y)(x-16y)
(a-20b)(a+24b)
(x+30y)(x-32y)
(x-16y)(x+17y)