Question

2x ao quadrado +4x=0

Answer 1

2x² - 4x = 0
x.(2x - 4) = 0
x = 0

2x - 4 = 0
2x = 4
x = 4/2
x = 2

R.: x = 0 e x = 2

Answer 2

${2 x}^{2} + 4x = 0 \\ \\ 2x(x + 4) = 0 \\ 2x = 0 \\ x = \frac{0}{2} \\ x = 0 \\ \\ x + 4 = 0 \\ x = - 4 \\ \\s = (0 \: \: \: \: e \: - 4 \: )$