Question

x (x-2) = 2 (x+6) - Equação do 2º Grau (Bhaskara)

Answer 1

x^2-2x = 2x+12
x^2-2x-2x-12=0
x^2-4x-12=0
(-4)^2-4×1×(-12)
16+48
64
X=-(-4)+-√64/2
x=4+-8/2
x1=4+8/2
x1=12/2
x1=6
X2=4-8/2
X2=4/2
X2=2
{6;2}