Find the result of a multiplication of two given matrices.

Problem

E=[1221]\text E = \left[\begin{array}{rr}-1 & -2 \\ -2 & -1\end{array}\right] and A=[2021]\text A = \left[\begin{array}{rr}2 & 0 \\ 2 & -1\end{array}\right].
Let H = EA\text {H = EA}. Find H.