Question

Urgent va rog!!!!!!!
Aflati x:

Answer 1

(13-14)/2=(-1)^2n+1 /2==> x=2

Answer 2

$\frac{\sqrt{169}-\sqrt{196}}{x}=\frac{(-1)^{2n+1}}{2}$

$Nr \ de \ forma \ 2n+1 \ sunt \ impare=\textgreater (-1)^{2n+1}=-1$

$\frac{13-14}{x}=\frac{-1}{2}$

$\frac{-1}{x}=\frac{-1}{2}$

$x=\frac{(-1)*2}{(-1)}=2$