2010000902

Časť: 
Project ID: 
2010000902
Source Problem: 
Accepted: 
0
Clonable: 
1
Easy: 
0
Za predpokladu, že \(x\neq \pm y\) a \(x\neq 0\), zjednodušte výraz: \[ \left ( \frac{y}{y-x} - \frac{2x} {y+x} - \frac{y^{2}} {y^{2} - x^{2}}\right ) : \left ( \frac{1}{x + y} - \frac{y} {y^{2} - x^{2}}\right )\]
\( y-2x\)
\(2x-y\)
\(\frac{2x-y} {x}\)
\( 0\)