Question

Resolva as equações a seguir
x(x+4)+x(x+2)=2x
(x-5)/10+(1-2x)/5=(3-x)/4​

Answer 1

Vamos là.

x*(x + 4) + x*(x + 2) = 2x

x² + 4x + x² + 2x = 2x

2x² + 4x = 0

x² + 2x = 0

x(x + 2) = 0

x1 = 0

x2 = -2

(x - 5)/10 + (1 - 2x)/5 = (3 - x)/4

mmc = 20

2x - 10 + 4 - 8x = 15 - 5x

6x - 5x = -21

x = -21

Answer 2

Resposta:

Explicação passo a passo:

x(x+4)+x(x+2)=2x

x^2 + 4x + x^2 + 2x - 2x = 0

2x^2 + 4x = 0

2x^2 = - 4x (:2x)

x = -2

x = 0

(x-5)/10 + (1-2x)/5 = (3-x)/4​

2x-10 + 4-8x = 15-5x

-6x -6 = 15 - 5x

-6x + 5x = 15 + 6

-x = 21

x = -21

Vilmar