(x+y)(x-xy+y)

(x+y)(x-xy+y)=??
2024-11-17 15:34:06
推荐回答(2个)
回答1:

你好

如果是(x+y)(x²-xy+y²)=x³+y³

这是个立方和公式

回答2:

(x+y)(x-xy+y)=x²-x²y+xy+xy-xy²+y²=x²+2xy+y²-x²y-xy²