Evaluate 5&-4 1&3 - Vidyadip

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
$\triangle5(\sqrt3)-(-4)^1=5\sqrt{3}+4$

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