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Find the Indicated Matrix 4A5(AB)- 4 A - 5 ( A - B )

Question 83

Multiple Choice

Find the indicated matrix.
-Find 4A5(AB) - 4 A - 5 ( A - B )
A=[480984] and B=[821658]A = \left[ \begin{array} { r r r } 4 & 8 & 0 \\9 & 8 & - 4\end{array} \right] \text { and } B = \left[ \begin{array} { r r r } 8 & 2 & - 1 \\- 6 & 5 & 8\end{array} \right]


A) [46251114776]\left[ \begin{array} { r r r } - 4 & 62 & 5 \\ 111 & 47 & - 76 \end{array} \right]

B) [46251114776]\left[ \begin{array} { r r r } 4 & - 62 & - 5 \\ - 111 & - 47 & 76 \end{array} \right]

C) [7682551974]\left[ \begin{array} { r r r } - 76 & - 82 & 5 \\ - 51 & - 97 & - 4 \end{array} \right]

D) [3625391744]\left[ \begin{array} { r r r } - 36 & - 2 & 5 \\ 39 & - 17 & - 44 \end{array} \right]

Correct Answer:

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