Plz solve the question. Q- 5 part 1,2,3

Dear student,
Your question is not clear as image appears to be blurred. However, assuming (i) part is ${\left(25a2\right)}^{\frac{1}{2}}$²) ​​​​​ and solving further.
 $$\begin{gathered} We have, \\ {\left(25a^2\right)}^{\frac{1}{2}} \\ ={\left(5a\right)}^{2\times \frac{1}{2}} --[{\left(a^m\right)}^n=a^{m\times n}] \\ =5a \end{gathered}$$
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Regards