Question

x(x-2)=2(+6) resultado​

Answer 1

Resposta:

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

x^2-2x=12

x^2-2x-12=0

x=-(-2)+-$x=\sqrt{(-2)^2-4.1.(-12)}/2.1\\x=\sqrt{2+-\sqrt{4+48}/2 } \\x=2+-\sqrt{52}/2\\x=2+-2\sqrt{13} /2\\x=2+2\sqrt{13}/2\\x=2-2\sqrt{13}/2\\x=1+\sqrt{13} \\x=1-\sqrt{13} \\x1=1-\sqrt{13} , x2=1+\sqrt{13}$