If x Is a real number such that x3 = 64, the x2 + x equals what?

20

Step-by-step explanation:

Assuming that the equation is x³ = 64, that can be solved by putting cube root on both sides like so: ∛ (x³) = ∛64, which simplifies to x = 4.

Plugging that into our expression gives us 4² + 4, which is 20.