Question

Resolva (x-2)•(x-2)-x-1=0

Answer 1

$[x^{2}-4x+4]-x-1=0$

$x^{2}-5x+3=0$

$\left \{ {{x_{1}=\frac{5+\sqrt{13}}{2} } \atop {x_{2}=\frac{5-\sqrt{13} }{2} }} \right.$