Question

2(X+6)+(x+2)(x-2)=2x+8

Answer 1

$2x + 12 + {x}^{2} - {2}^{2} = 2x + 8 \\ {x}^{2} = 2x - 2x + 8 - 12 + {2 }^{2} \\ {x}^{2} = 2x - 2x - 12 + 12 \\ {x}^{2} = 0 \: \: \: sacamos \: raices \: (\sqrt ) \\ \sqrt{ {x}^{2} } = \sqrt{0} \: \: \: \: el \: cuadrado \: con \: la \: raiz \: se \: van \\ asi \: que \: \\ x = 0$