x^2+7x+10=0 x等于几?
问题描述:
x^2+7x+10=0 x等于几?
答
x^2+7x+10=0
(x+2)*(x+5)=0
x=-2
x=-5
x^2+7x+10=0 x等于几?
x^2+7x+10=0
(x+2)*(x+5)=0
x=-2
x=-5