Question

One of the factors of x³ + 8 is x+2. What is the other factor?

Answer 1

x^3+8

= (x)^3 + (2)^3

= (x+2) (x^2-2x+2^2)

= (x+2) (x^2-2x+4)

The other factor is x^2-2x+4.