Question

Se stie ca x+ 1 supra x=2.Calculati x la patrat + 1 supra x patrat .Am nevoie de raspuns!

Answer 1

 [tex] \frac{x+1}{x} =2=>x+1=2x<=>1=2x-x=>x=1 [/tex]
$x^2+ \frac{1}{x^2} =1^2+ \frac{1}{1^2} =1+1=2$