因数分解L2-1-2(8問)
次の式を因数分解せよ。
x2-3x+2
解答○ ×x2-4x+3
解答○ ×a2-6a+5
解答○ ×a2-5a+6
解答○ ×x2-7x+12
解答○ ×y2-10y+24
解答○ ×b2-8b+7
解答○ ×c2-10c+9
解答○ ×問題と解答
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)
