Question

`x^(2) -12=-4x`

I know it's easy but I keep getting an answer different from the one in the book.

Answer 1

The answer for Factorization is (x+6)(x-2) = 0 or Solving for x is 2 and -6.

Explanation:

x² - 12 = -4x

Factorisation :

x² + 4x - 12 = 0

x² - 2x + 6x - 12 = 0

x(x-2)x + 6(x-2) = 0

(x+6)(x-2) = 0

Solve for x :

(x+6)(x-2) = 0

x + 6 = 0

x = -6

x - 2 = 0

x = 2