Question

3 (x-2) ao quadrado = 12

Answer 1

3 . (x - 2)² = 12
3.(x² - 4x + 4) = 12
3x² - 12x + 12 = 12
3x² - 12x + 12 - 12 = 0
3x² - 12x = 0

===

Fatorando:

3x (x - 4)

===

Encontrando as raízes: 

3x = 0
x = 0 / 3
x' = 0


x - 4 = 0
x'' = 4 


S = {0, 4}

Answer 2

Boa tarde Gabrielly

3*(x - 2)² = 12

(x - 2)² = 12/3 = 4

x² - 4x + 4 = 4

x² - 4x = 0

x*(x - 4) = 0

x1 = 0
x2 = 4