Question

Factor the following form

X^3+ 27=0

Answer 1

Use the ‘sum of two cubes’ formula (I attached a photo)

x^3 = (take the cube root bc that’s what the formula asks you to do) x

27 = (take the cube root) 3


Put the values into the formula:

(x + 3)(x^2 - 3x + 9)