Question

equação
$2 {x}^{2} + 4x = 0$

Answer 1

$2x ^{2} + 4x = 0 \\ \\ 2x.(x + 2) = 0 \\ \\ x.(x + 2) = 0 \\ \\ x = 0 \\ x + 2 = 0 \\ \\ x = 0 \\ x = - 2$