Question

resolva a equaçao!(×-2)(×-2)-×=1

Answer 1

(×-2)(×-2)-×=1

x^2 - 4x + 4 - x - 1 = 0

x^2 - 5x + 3 = 0 

Δ = (-5)² - 4.1.3 = 25 - 12 = 13

x = 5+/-√13
         2.1

x = 5+/-√13
           2