A) $\text { [10 } 7 \text { 61] }$

question 146

Multiple Choice

$A = \left[ \begin{array} { l l l } - 7 & - 2 & 5\end{array} \right] \text { and } B = \left[ \begin{array} { r r r } - 1 & - 3 & - 9 \\1 & 2 & - 4 \\1 & - 2 & - 2\end{array} \right]$

• A)\(\text { [10 } 7 \text { 61] }\)
• B)\(\left[ \begin{array} { r r r }
• 7 & 6 & - 45 \\
• - 7 & - 4 & - 20 \\
• - 7 & 4 & - 10
• \end{array} \right]\)
• C) not possible
• D) \(\left[ \begin{array} { r }
• 10 \\
• 7 \\
• 61
• \end{array} \right]\)

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