10. \( g(t)=\left(t+\frac{1}{t}\right)\left(5 t^{2}-\frac{1}{t^{2}}\right) \)

Calaula las saguientes determinantes \( \begin{array}{ll}\text { a) }\left|\begin{array}{cc}-8 & 9 \\ -1 & 20\end{array}\right| & \text { b }\left|\begin{array}{ll}2 & \frac{1}{3} \\ \frac{1}{2} & -1\end{array}\right| \text { c) }\left|\begin{array}{cc}5 & -a \\ 2 a & 4 a^{2}\end{array}\right|\end{array} \)

If \( 33-a=a+27-5 a \), what is the value of \( 33+3 a ? \)

\( \frac { 4 x y } { x ^ { 2 } + y ^ { 2 } } \)

Analizar y graficar 3) \( y=2 x^{2}-4 x+5 \)

d) \( \frac{3^{4}: 3}{3^{2}}= \)