[tex] x^{3} + x [/tex]
x= -3
Plug the value of x into the equation. x = -3
After putting the value of x in it now looks like:
[tex] -3^{3} + (-3) [/tex]
Now solve:
[tex] -3^{3} [/tex] 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
