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因式分解:x^4y^4-8x^2*y^2+16
人气:217 ℃ 时间:2020-05-13 11:22:13
解答
x^4y^4-8x^2*y^2+16
=(x^2y^2)^2-8x^2*y^2+16
=(x^2y^2-4)^2
=(xy+2)^2(xy-2)^2
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