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数学
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因式分解x^2y^2-y^4-12xy+36y^2,
人气:451 ℃ 时间:2020-05-25 08:00:24
解答
x^2y^2-y^4-12xy+36y^2=x^2y^2-12xy+36y^2-y^4=(xy-6)^2-y^4=(xy-y^2-6)(xy+y^2-6)
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