\(x^{3} + x\)
x= -3
Plug the value of x into the equation. x = -3
After putting the value of x in it now looks like:
\(-3^{3} + (-3)\)
Now solve:
\(-3^{3}\) is the same as: (-3) x (-3) x (-3)
(-3) x (-3) x (-3) = -27
Finish the equation by adding -3 to -27 (same thing as subtracting 3 from -27)
-27 + (-3) = -30
x = -30
