Question

Qual o resultado de (x+8)(x-8)

Answer 1

(x + 8).(x - 8)

x² - 8x + 8x - 64

x² - 64

x² = 64

x = raiz de 64

x = 8

Answer 2

(x + 8 ) (x - 8) =

x^2 - 8x + 8x - 64

x^2 - 64