Let $A = \begin{pmatrix} 8 & 10 \ -5 & -3 \end{pmatrix}$ and $B = \begin{pmatrix} 8 & 10 \ 5 & 4 \end{pmatrix}$. Then $AB = \begin{pmatrix} \Box & \Box \\ \Box & \Box \end{pmatrix}$
Added by Tamara R.
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This gives us: -(-35 13) = -(-35) - 13 = 35 - 13 = 22 Show more…
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