Rational function

Q.

What is the conjugate of a fraction?

Q.

Let, $f\left(x\right)=x^{2}andg\left(x\right)=3x+4$.Find the value of $\frac{(f+g)\left(x\right)}{(f-g)\left(x\right)}$ when x = 1

1. 

2. 

3. 

4. 

Q.

If f(x) = $\sqrt{x}$ and $g\left(x\right)=x$ , then $\left(\frac{f}{g}\right)\left(x\right)$ equals to $(x\ne 0)$

1. $x^{\frac{3}{2}}$

2. $\sqrt{x}$

3. $x$

4. $\frac{1}{\sqrt{x}}$