多项式2xy-3x2+y2加上多少等于-xy+2x2
问题描述:
多项式2xy-3x2+y2加上多少等于-xy+2x2
答
3xy-5x2+y2.2xy-3x2+y2-(-xy+2x2)=3xy-5x2+y2.
多项式2xy-3x2+y2加上多少等于-xy+2x2
3xy-5x2+y2.2xy-3x2+y2-(-xy+2x2)=3xy-5x2+y2.