解不等式:(x+1)(x-3)<x(2x+3)-(x²-1)
问题描述:
解不等式:(x+1)(x-3)<x(2x+3)-(x²-1)
答
x^2 - 2x - 3 x^2 - 2x - 3 -2x - 3 5x > -4
x > -4/5