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求8(x+y)^3+1因式分解
人气:101 ℃ 时间:2020-05-22 14:15:55
解答
8(x+y)^3+1
=8[(x+y)^3+1/8]
=8[(x+y)^3+(1/2)^3]
=8(x+y-1/2)[(x+y)^2+1/2*(x+y)+1/4]
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