x^2+7x+6=0 x=?
问题描述:
x^2+7x+6=0 x=?
答
x^2+7x+6=0
(x+1)(x+6)=0
x1=-1 x2=-6
x^2+7x+6=0 x=?
x^2+7x+6=0
(x+1)(x+6)=0
x1=-1 x2=-6