计算:(xy-x²)乘 x-y分之xy

学习 时间:2026-08-13 19:06:06 阅读:2982
计算:(xy-x²)乘 x-y分之xy

最佳回答

健康的大门

寂寞的魔镜

2026-08-13 19:06:06

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