2x²+3x+1≥0解不等式
问题描述:
2x²+3x+1≥0解不等式
答
2x²+3x+1≥0
(x+1)(2x+1)≥0
x≥-1/2或x≤-1
2x²+3x+1≥0解不等式
2x²+3x+1≥0
(x+1)(2x+1)≥0
x≥-1/2或x≤-1