Find the result of a multiplication of two given matrices.

Problem

B=[5215]\text B = \left[\begin{array}{rr}5 & -2 \\ -1 & 5\end{array}\right] and A=[2002]\text A = \left[\begin{array}{rr}2 & 0 \\ 0 & 2\end{array}\right].
Let H = BA\text {H = BA}. Find H.