Question

If x= -2 calculate the value of: x cubed + 3

Answer 1

xcubed=x^3=x*x*x
if x=-2
-2 cubed+3=-2*-2*-2+3=4*-2+3=-8+3=-5

Answer 2

-2^3 + 3

The first step is to cube -2. This means you do this:

-2 * -2 * -2

This is equal to -8. Now, your equation looks like this:

-8 + 3

The answer to the above is -5. Good luck!