Question

【題目】因式分解：

(1)3a(x－y)－5b(y－x)；

(2)x6－x2y4.

Answer 1

【答案】(1) (x－y)(3a＋5b)；(2) x2(x－y)(x＋y)(x2＋y2)．

【解析】

根據(jù)因式分解法即可求出答案．

(1)原式＝(x－y)(3a＋5b)．

(2)原式＝x2(x4－y4)

＝x2(x2－y2)(x2＋y2)

＝x2(x－y)(x＋y)(x2＋y2)．