Question

equação do 2° grau
$x(2x - 1) = 2(x + 6)$

Answer 1

2x²-x=2x+12. |+x
2x²=3x +12. |÷2
x²=1,5x+6. |-1,5x |-6
x²-1,5x-6=0
x1,2= 0,75±√0,75²+6
x1,2= 0,75±2,56
x1= 3,31
x2=-1,81