Question

solve x^3-64=0

Answer 1

x^3 = 64
x = 64^1/3
x = (4)^3/3 = 4

Answer 2

im sorry i meant factor then solve. thanks

Answer 3

It is the same:
(x^3 - 4^3) = 0

a^3 - b^3 = (a – b)(a2 + ab + b2)

So, you get:
(x-4)(x^2 + 4x + 16) = 0
x=4.

Other factor produces imaginary roots.