Question

13........................

Answer 1

Answer:

C.

Step-by-step explanation:

Answer 2

Answer:

Choice c is the answer.

Step-by-step explanation:

We have given a expression.

$\frac{\sqrt{x} }{\sqrt{x}+\sqrt{5}}$

We have to find the rationalized form of above expression.

Multiplying and dividing by $\sqrt{x}-\sqrt{5}$ to given expression,we have

$\frac{\sqrt{x} }{\sqrt{x}+\sqrt{5} } \frac{\sqrt{x}-\sqrt{5} }{\sqrt{x}-\sqrt{5} }$

$\frac{\sqrt{x}(\sqrt{x}-\sqrt{5})}{(\sqrt{x})^{2}-(\sqrt{5})^{2}}$

$\frac{(\sqrt{x})^{2}-\sqrt{5}\sqrt{x}}{x-5}$

$\frac{x-\sqrt{5x} }{x-5}$ which is the rationalized form of given expression.