If \( 2 A-B=\left(\begin{array}{ccc}6 & -6 & 0 \\ -4 & 2 & 1\end{ar...
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If \( 2 A-B=\left(\begin{array}{ccc}6 & -6 & 0 \\ -4 & 2 & 1\end{array}\right) \) and
\( \mathrm{P} \)
\( 2 B+A=\left(\begin{array}{ccc}3 & 2 & 5 \\ -2 & 1 & -7\end{array}\right) \), then \( A= \) ?
W
(1) \( \left(\begin{array}{ccc}3 & 2 & -1 \\ 2 & -1 & 1\end{array}\right) \)
(2) \( \left(\begin{array}{rrr}3 & -2 & 1 \\ -2 & 1 & -1\end{array}\right) \)
(3) \( \left(\begin{array}{rrr}-3 & 2 & 1 \\ 2 & 1 & -1\end{array}\right) \)
(4) None of these.
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