Question 97039

In general a^3 + b^3 = (a + b) (a^2 - ab + b^2)

the given expression x^3 + 8 can be written as
    x^3 + 2^3
   = (x + 2 )(x^2 - 2*x + 2^2)
   = (x + 2 )(x^2 - 2x + 4)