Question

hello pls

calculem:

- 3x2 + 12x = 0

Answer 1

$- 3 \times 2 + 12x = 0 \\ - 6 + 12x = 0 \\ 12x = - 6 + 0 \\ 12x = - 6 \\ 2x = - 1 \\ x = - 0.5$