Rút gọn \[ \sqrt{\frac{1-3x}{2x} + \frac{3x-2}{2x-1} + \frac{3x-2}{2x-4x^2}} \] \[ y) \frac{x^2}{x+y} + \frac{y^2}{y+z} - \frac{z^2}{x+y} + \frac{-z^2}{y+z} ; \]

----- Nội dung ảnh -----
\[
\sqrt{\frac{1-3x}{2x} + \frac{3x-2}{2x-1} + \frac{3x-2}{2x-4x^2}}
\]

\[
y) \frac{x^2}{x+y} + \frac{y^2}{y+z} - \frac{z^2}{x+y} + \frac{-z^2}{y+z} ;
\]

\[
J \quad A = 20x^2 + 120x + 180 - \frac{5x^2 - 125}{(3x + 5)^2 - 4x^2} + \frac{(2x + 3)^2 - x^2}{9x^2 - (2x + 5)^2} .
\]

\[
z) \frac{1}{3x-2} - \frac{4}{3x+2} - \frac{3x-6}{4-9x^2} .
\]