解不等式 x(x3+3x-5)-(x2+1)(x2+2)>0
问题描述:
解不等式 x(x3+3x-5)-(x2+1)(x2+2)>0
答
x(x^3+3x-5)-(x^2+1)(x^2+2)>0
x^4+3x^2-5x-x^4-2x^2-x^2-2>0
-5x-2>0
5x+2