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因式分解:(x²-y²)²-8(x²+y²)+16. 谢谢!
人气:377 ℃ 时间:2020-04-16 17:18:04
解答
(x²-y²)²-8(x²+y²)+16=(x²-y²)² -8(x²-y²)+16-16y²=(x²-y²-4)²-16y²=(x²-y²-4+4y)(x²-y²-4-4y)=[x²-(y&...
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