解不等式ax²+(5a+1)x+6a+2≥0

问题描述:

解不等式ax²+(5a+1)x+6a+2≥0

ax^2+(5a+1)x+6a+2≥0
所以[ax+(3a+1)](x+2)≥0
(1)当a=0时,x+2≥0,不等式的解为x≥-2;
(2)当a>0时,因为-(3a+1)/a