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x^2(x-2y)+y^2(2y-x)因式分解
人气:476 ℃ 时间:2020-01-27 21:45:40
解答
x^2(x-2y)-y^2(x-2y)
=(x-2y)(x^2-y^2)
=(x-2y)(x+y)(x-y)
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