MCQ
Evaluate $\begin{bmatrix}5&-4\\1&\sqrt{3}\end{bmatrix}$
- A$4\sqrt{3}+4$
- B$4\sqrt{3}+5$
- ✓$5\sqrt{3}+4$
- D$4\sqrt{3}-4$
✓
Answer
Correct option: C.
$5\sqrt{3}+4$
Evaluating along $\text{R}_1$, we get
$\triangle5(\sqrt3)-(-4)^1$
$=5\sqrt{3}+4$
$\triangle5(\sqrt3)-(-4)^1$
$=5\sqrt{3}+4$
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