把x4-2x2y2+y4分解因式,结果是(  )A.(x-y)4B.(x2-y2)4C.[(x+y)(x-y)]2D.(x+y)2(x-y

2024-11-22 11:13:46
推荐回答(1个)
回答1:

原式=(x2-y22
=[(x+y)(x-y)]2
=(x+y)2(x-y)2
故选D.