Question

x (x + 4) + x(x + 2)= 2x2 + 12

Answer 1

Olá.

• x (x + 4) + x (x + 2) = 2x² + 12

x² + 4x + x² + 2x = 2x² + 12
2x² + 6x = 2x² + 12
2x² - 2x² + 6x - 12 = 0
6x - 12 = 0
6x = 12
x = 2

Bons estudos.

Answer 2

X²+4x+x²+2x=2x²+12

X²+x²-2x²+4x+2x-12

2x²-2x²6x-12

6x-12=0

6x=12

X=12/6

X=2