解不等式组(x-3)(x+2)
问题描述:
解不等式组(x-3)(x+2)
答
(x-3)(x+2)-9/4
(2x-1)(2x-5)>=4x(x-5)
4x^2-12x+5>=4x^2-20x
8x>=-5
x>=-8/5
综上,x>=-8/5