2x(x+y)二次方-x(x+y)三次方
问题描述:
2x(x+y)二次方-x(x+y)三次方
答
2x方+2xy-x方-xy
x方+xy
(x+y)x
2x(x+y)二次方-x(x+y)三次方
2x方+2xy-x方-xy
x方+xy
(x+y)x