(2x+1)(x-3)-(2x+3)(x-1)大于等于12的解

网友回答

(2x+1)(x-3)-(2x+3)(x-1)≥12
(2x²-5x-3)-(2x²+x-3)≥12
-5x-3-x+3≥12
-6x≥12
x≤-2======以下答案可供参考======
供参考答案1:
你好，85321ef
(2x+1)(x-3)-(2x+3)(x-1)≥12
2x²-6x+x-3-(2x²-2x+3x-3)≥12
2x²-5x-3-2x²-x+3≥12
-6x≥12
x≤-2