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因式分解(x-y)^2-1/2(x-y)+1/16
人气:145 ℃ 时间:2020-06-03 07:40:44
解答
(x-y)^2-1/2(x-y)+1/16
=(x-y)^2-2×(x-y)×1/4+(1/4)^2
=[(x-y)-1/4]^2
=(x-y-1/4)^2
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