Electronis Discussion
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Given that

$A=\begin{bmatrix} -5 &-3 \\ 2 &0\end{bmatrix}$ and $I=\begin{bmatrix} 1 & 0 \\ 0 &1\end{bmatrix}$, the value of $A^3$ is

  1. $15\:A+12\:I$
  2. $19\:A+30\:I$
  3. $17\:A+15\:I$
  4. $17\:A+21\:I$
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