यदि \( \mathrm{A}=\mathrm{c}^{3} \begin{array}{cc}-5 \\ -4 & 2\end{array} \) हो तो \( \mathrm{A}...

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यदि \( \mathrm{A}=\mathrm{c}^{3} \begin{array}{cc}-5 \\ -4 & 2\end{array} \) हो तो \( \mathrm{A}^{2}-5 \mathrm{~A}-14 \) ज्ञात कीजिए और फिर इसके प्रयोग से \( \mathrm{A}^{3} \) ज्ञात कीजिए।
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