Hi

Can someone help me how to solve the following:

1) Find the real solutions of the cubic equation:$\displaystyle 9x^3 + 8x +6$

$\displaystyle let x = x $

This is what i have done:

$\displaystyle 9x^2 +8+6 = 0$

$\displaystyle 9x^2 = -14$

$\displaystyle x^2=\frac{-14}{9}$

$\displaystyle x=1.2472$

2) Find the inequality corresponding to the graph:

P.S