Упростите выражение: (1/(4x^2)-1/xy+1/y^2)*(1/(2x-y)-1/(y-2x))-1/(xy^2).

\[= \frac{- (y - 2x)}{2x^{2}y^{2}} - \frac{1^{\backslash 2x}}{xy^{2}} =\]

\[= \frac{2x - y - 2x}{2x^{2}y^{2}} = \frac{- y}{2x^{2}y^{2}} =\]

\[= - \frac{1}{2x²y}\]