Question

Solve:
x^3 + 5x^2 - x - 5 > 0

Answer 1

by some miracle this factors as
\[(x-1) (x+1) (x+5)>0\]

Answer 2

now it should be easy right? zeros are at \(-5,-1\) and \(1\)

Answer 3

positive between on the interval \((-5,-1)\) and also on \((1,\infty)\)