如果(x-2y)(x+3y)=x^2十mxy+ny^2.,那么m,n的值分别是

问题描述:

如果(x-2y)(x+3y)=x^2十mxy+ny^2.,那么m,n的值分别是

(x—2y)(x+3y)
=x^2+yx-6y^2
m=1,n=-6