(17-02-2019 02:22)matias0446 escribió:  Lo hice así:

\[(- \frac{1}{24})(\frac{x^2}{2}-13 x)- \frac{35}{16}=R\]
\[(-\frac{x^2}{48}+\frac{13}{24} x)=R+\frac{35}{16}\]

Multiplico por -48 a ambos términos:

\[x^2-26 x=-48 R-105\]
\[x^2-26 x +(- \frac{26}{2})^2 =-48 R-105+ (- \frac{26}{2})^2 \]
\[x^2-26 x +169=64-48 R \]
\[(x-13)^2=64-48 R \]
\[x-13=- \sqrt{(64-48 R)}\]
\[x=13 - \sqrt{(64-48 R)}\]