解不等式:(x+1)(x-3)＜x(2x+3)-(x²-1)_数学解答

解不等式:(x+1)(x-3)＜x(2x+3)-(x²-1)

人气：149 ℃　时间：2020-05-27 05:00:51

解答

x^2 - 2x - 3 < 2x^2 + 3x - x^2 + 1
x^2 - 2x - 3 < x^2 + 3x + 1
-2x - 3 < 3x + 1
5x > -4
x > -4/5