If x = -3 calculate the value of: x3 + x

x= -3

Plug the value of x into the equation. x = -3

After putting the value of x in it now looks like:



Now solve:
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