Multiply matrices

Find the result of a multiplication of two given matrices.

Problem

$\text E = \left[\begin{array}{rr}-1 & -2 \\ -2 & -1\end{array}\right]$ and $\text A = \left[\begin{array}{rr}2 & 0 \\ 2 & -1\end{array}\right]$.
Let $\text {H = EA}$. Find H.