计算:(xy-x²)乘 x-y分之xy

学习 时间:2026-05-30 17:35:20 阅读:9000
计算:(xy-x²)乘 x-y分之xy

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2026-05-30 17:35:20

(xy-x²)乘 (x-y)分之xy =-x(x-y)乘 [(x-y)分之xy]=-x²y