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因式分解题!(x-y)的三次方-4(x-y)的平方+4(x-y)
(x-y)的三次方-4(x-y)²+4(x-y),
人气:245 ℃ 时间:2019-10-19 12:40:22
解答
(x-y)的三次方-4(x-y)²+4(x-y)
=(x-y)[(x-y)²-4(x-y)+4]
=(x-y)(x-y-2)²
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