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1\(x-y)的平方×(x-y)的立方×(y-x)的平方×(y-x)的立方
人气:312 ℃ 时间:2020-06-17 09:47:42
解答
1\(x-y)^2×(x-y)^3×(y-x)^2×(y-x)^3
=1\(x-y)^2×(x-y)^2×(x-y)^3×(x-y)^2
×(-(x-y))
=1×(x-y)^5×(-(x-y))
=-(x-y)^6
提示:(X-Y)^2=(Y-X)^2
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