x^2-3x-18=0 求x
问题描述:
x^2-3x-18=0 求x
答
1 -6
1 3
(x-6)(x+3)=0
x1=6
x2=-3
x^2-3x-18=0 求x
1 -6
1 3
(x-6)(x+3)=0
x1=6
x2=-3