Solución 1
\[2x^2 - 3x - 14=0\]
\[x = \boxed{(\frac{7}{2}, -2)}\]
Solución 2
\[5x^2 + x - 48=0\]
\[x = \boxed{(3, \frac{-16}{5})}\]
Solución 3
\[-4x^2 - 5x + 51=0\]
\[x = \boxed{(\frac{-17}{4}, 3)}\]
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