The image contains two mathematical expressions labeled (ii) and (iii). Let's go over both expressions step-by-step:

(ii) Expression:

$\left( \frac{x^{\frac{7}{4}} - x^{\frac{3}{4}} + x \cdot x^{\frac{7}{4}}}{x^4} \right)^2$

• Numerator: $x^{\frac{7}{4}} - x^{\frac{3}{4}} + x \cdot x^{\frac{7}{4}} = x^{\frac{7}{4}} - x^{\frac{3}{4}} + x^{1 + \frac{7}{4}} = x^{\frac{7}{4}} - x^{\frac{3}{4}} + x^{\frac{11}{4}}$

• Denominator: $x^4$

Thus, the expression simplifies to:

$\left( \frac{x^{\frac{7}{4}} - x^{\frac{3}{4}} + x^{\frac{11}{4}}}{x^4} \right)^2$

Now, distribute the denominator $x^4$ to each term in the numerator: