计算:(xy-x²)乘 x-y分之xy

学习 时间:2026-11-13 05:25:50 阅读:2699
计算:(xy-x²)乘 x-y分之xy

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秀丽的溪流

美好的热狗

2026-11-13 05:25:50

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