计算:(xy-x²)乘 x-y分之xy

学习 时间:2026-04-03 13:01:08 阅读:9653
计算:(xy-x²)乘 x-y分之xy

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坦率的母鸡

奋斗的刺猬

2026-04-03 13:01:08

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