Question
Evaluate $\begin{bmatrix}5&-4\\1&\sqrt{3}\end{bmatrix}$
- $4\sqrt{3}+4$
- $4\sqrt{3}+5$
- $5\sqrt{3}+4$
- $4\sqrt{3}-4$
✓
Answer
- $5\sqrt{3}+4$
Evaluating along $\text{R}_1$,we get
$\triangle5(\sqrt3)-(-4)^1=5\sqrt{3}+4$
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