WeBWorK Standalone Renderer

Let $M = \left[\begin{array}{cc} -2 &-5\cr 10 &13 \end{array}\right].$ Find formulas for the entries of $M^n$ , where $n$ is a positive integer.

$M^n=$ $\left[\Rule{0pt}{2.4em}{0pt}\right.$ $\left]\Rule{0pt}{2.4em}{0pt}\right.$