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把下列各式分解因式:(1)a2(x-y)2+2a(x-y)3+(x-y)4(2)(x2+y2)2-4x2y2.

题目详情
把下列各式分解因式:
(1)a2(x-y)2+2a(x-y)3+(x-y)4
(2)(x2+y22-4x2y2
▼优质解答
答案和解析
(1)a2(x-y)2+2a(x-y)3+(x-y)4
=(x-y)2[a2+2a(x-y)+(x-y)2
=(x-y)2(a+x-y)2

(2)(x2+y22-4x2y2
=(x2+2xy+y2)(x2-2xy+y2),
=(x+y)2(x-y)2