Answer
$$ \begin{bmatrix} -1&4&6\\10&-.5&0 \\ -4 &5&1 \end{bmatrix}$$
Work Step by Step
Using the distributive property for matrices:
$$ \begin{bmatrix} -1&4&6\\10&-.5&0 \\ -4 &5&1 \end{bmatrix}$$
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