5X^2—7XY-6Y^2=0,则y分之x的值为多少
问题描述:
5X^2—7XY-6Y^2=0,则y分之x的值为多少
答
5X^2—7XY-6Y^2=0
(5x+3y)(x-2y)=0
5x+3y=0
x=-3/5y
x/y=-3/5
x-2y=0
x=2y
x/y=2