Question

x+1/x=4
x^+1/x^=?
repedee

Answer 1

$x+ \frac{1}{x}=4$

Ridicam la a doua relatia:

[tex](x+ \frac{1}{x} )^2=16\\ x^2+2x* \frac{1}{x}+ \frac{1}{x^2}=16\\ x^2+ \frac{1}{x^2}+2 =16\\ x^2+ \frac{1}{x^2}=14 [/tex]