Answer:
Option A is correct
the expression is equal to \(\frac{5}{ \sqrt{11}}\) is \(\frac{5\sqrt{11}} {11}\)
Explanation:
Given expression is, \(\frac{5}{ \sqrt{11}}\)
Multiply and divide by the denominator by \(\sqrt{11}\) in the given expression, we have,
\(\frac{5}{\sqrt{11}} \times \frac{\sqrt{11}} { \sqrt{11}}\)
or
\(\frac{5 \cdot \sqrt{11}} {\sqrt{11} \cdot \sqrt{11}}\)
use : \(\sqrt{a}\cdot\sqrt{a}=(\sqrt{a} )^2 = a\)
then;
\(\frac{5\sqrt{11}} { (\sqrt{11})^2} =\frac{5\sqrt{11}} {11}\)
Therefore, the expression is equal to \(\frac{5}{ \sqrt{11}}\) is, \(\frac{5\sqrt{11}} {11}\)
