Question
$\text{If }x \in \text{N and} \begin{bmatrix} \text{x + 3} & -2 \\ \text{-3x} & \text{2x} \\ \end{bmatrix} = 8, $ then find the value of $x.$
✓
Answer
$\text{(x + 3)2x - (-2) (-3x) = 8}$
$\text{x} = 2$
$\text{x} = 2$
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