Question

Calculati xlapatrat+1/xlapatrat,stiind ca x-1/x=3

Answer 1

$\frac{ x^{2} +1}{ x^{2} } = \frac{ \frac{1}{4} +1}{ \frac{1}{4} } = \frac{5}{4} *4=5$

$\frac{x+1}{x}=3 =\ \textgreater \ x= \frac{1}{2}$