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Perform the Indicated Matrix Operations A=[−6−6−3−32−85−2−7]A = \left[ \begin{array} { r r r } - 6 & - 6 & - 3 \\ - 3 & 2 & - 8 \\ 5 & - 2 & - 7 \end{array} \right]

Question 79

Multiple Choice

Perform the indicated matrix operations.
-Let A=[−6−6−3−32−85−2−7]A = \left[ \begin{array} { r r r } - 6 & - 6 & - 3 \\ - 3 & 2 & - 8 \\ 5 & - 2 & - 7 \end{array} \right] and B=[−5−5−17−611−5−2]B = \left[ \begin{array} { r r r } - 5 & - 5 & - 1 \\ 7 & - 6 & 1 \\ 1 & - 5 & - 2 \end{array} \right] . Find 2A−2B2 A - 2 B .


A) [−1146−11−4−7−4−7−9]\left[ \begin{array} { r r r } - 11 & 4 & 6 \\ - 11 & - 4 & - 7 \\ - 4 & - 7 & - 9 \end{array} \right]

B) [−11−11−44−4−76−7−9]\left[ \begin{array} { r r r } - 11 & - 11 & - 4 \\ 4 & - 4 & - 7 \\ 6 & - 7 & - 9 \end{array} \right]

C) [−17−17−71−2−1511−9−16]\left[ \begin{array} { r r r } - 17 & - 17 & - 7 \\ 1 & - 2 & - 15 \\ 11 & - 9 & - 16 \end{array} \right]

D) [−2−2−4−2016−1886−10]\left[ \begin{array} { r r r } - 2 & - 2 & - 4 \\ - 20 & 16 & - 18 \\ 8 & 6 & - 10 \end{array} \right]

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