Question

X(×+4)+×(×+2)=2ײ+12

Answer 1

Resposta:

x( x + 4) + x( x + 2)= 2x² + 12?

x(x + 4 + x + 2) = 2x² + 12

x(2x + 6) = 2x² + 12

2x² + 6x = 2x² + 12

2x² - 2x²  + 6x = 12

6x = 12

x = 12/6

x = 2

Answer 2

Vamos lá.

x² + 4x + x² + 2x = 2x² + 12

6x = 12

x = 2