If \( A=\left[\begin{array}{rr}2 & 3 \\ 5 & -2\end{array}\right] \)...

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If \( A=\left[\begin{array}{rr}2 & 3 \\ 5 & -2\end{array}\right] \), show that \( A^{-1}=\frac{1}{19} A \).
\( \mathrm{P} \)
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