Cuadrados Perfectos

\[x^2 = 64\]
\[x=\boxed{-8, 8}\]

\[x^2 = 1\]
\[x=\boxed{-1, 1}\]

\[x^2 = 9\]
\[x=\boxed{-3, 3}\]

\[x^2 = 16\]
\[x=\boxed{-4, 4}\]

\[x^2 = \frac{49}{100}\]
\[x=\boxed{\frac{-7}{10}, \frac{7}{10}}\]

\[x^2 = \frac{9}{4}\]
\[x=\boxed{\frac{-3}{2}, \frac{3}{2}}\]

\[x^2 + 1 = \frac{13}{4}\]
\[x=\boxed{\frac{-3}{2}, \frac{3}{2}}\]

\[x^2 + 1 = \frac{58}{9}\]
\[x=\boxed{\frac{-7}{3}, \frac{7}{3}}\]

\[x^2 + 1 = 5\]
\[x=\boxed{-2, 2}\]

\[4(x^2 + 1) = 20\]
\[x=\boxed{-2, 2}\]

\[2(x^2 + 1) = \frac{218}{9}\]
\[x=\boxed{\frac{-10}{3}, \frac{10}{3}}\]

\[2(x^2 + 1) = \frac{97}{8}\]
\[x=\boxed{\frac{-9}{4}, \frac{9}{4}}\]