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因式分解(z2-x2-y2)2-4x2y2,用初二知识解答
人气:141 ℃ 时间:2020-06-22 10:11:08
解答
(z²-x²-y²)²-(2xy)²=(z²-x²-y²+2xy)(z²-x²-y²-2xy)=【z²-(x²+y²-2xy)】【z²-(x²+y²+2xy)】=【z²-(x-y)&...
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