Question

Somebody... PLEASE help

What is the only solution of 2x2 + 8x = x2 – 16?

Answer 1

x= - 4

Explanation:

2 * x^2 + 8 * x = x^2 - 16

2 * x^2 - x^2 + 8 * x + 16 = 0

x^2 + 8 * x + 16 = 0

(x + 4) * (x + 4) = 0

x = - 4