\[\frac{2x^{2} - 3x - 5}{2x - 5} = 0\ \ \ \ \ \ \ \ \ \ \ x \neq 2,5\]
\[2x^{2} - 3x - 5 = 0\]
\[D = ( - 3)^{2} - 4 \cdot 2 \cdot ( - 5) =\]
\[= 9 + 40 = 49\]
\[x_{1} = \frac{3 + \sqrt{49}}{2 \cdot 2} = \frac{3 + 7}{4} = \frac{10}{4} =\]
\[= \frac{5}{2} = 2,5\ (не\ подходит)\]
\[x_{2} = \frac{3 - \sqrt{49}}{2 \cdot 2} = \frac{3 - 7}{4} = \frac{- 4}{4} =\]
\[= - 1.\]
\[Ответ:\ - 1.\]