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因式分解:X^4+4y^4
人气:315 ℃ 时间:2020-06-03 18:46:11
解答
x^4+4y^4 =x^4+4y^4+4x^2.y^2-4x^2.y^2 =(x+2y)^2-4x^2.y^2 =(x+2y+2xy)(x+2y-2xy)
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