解不等式组(x+2)(x-3)>(-x-3)^2-1 (2x-5)(2x+5)>(x-3)(4x+7)

问题描述:

解不等式组(x+2)(x-3)>(-x-3)^2-1 (2x-5)(2x+5)>(x-3)(4x+7)

(x+2)(x-3)>(-x-3)^2-1
x^2-x-6>x^2+6x+9-1
7xx(2x-5)(2x+5)>(x-3)(4x+7)
4x^2-25>4x^2-5x-21
5x>4
x>4/5
和x所以不等式组无解