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因式分解(x-y)^4-4(x-y)^2
人气:459 ℃ 时间:2020-09-13 12:04:45
解答
(x-y)^4-4(x-y)^2
=(x-y)^2[(x-y)^2-4]
=(x-y)^2(x-y+2)(x-y-2)
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