Question

http://prntscr.com/4cbrgi

Answer 1

@aum

Answer 2

\[ \large
\frac { \sqrt{30(x-1)} } {\sqrt{5(x-1)^2}} = \sqrt{\frac{30(x-1)}{5(x-1)^2}} =
\sqrt{\frac{6}{(x-1)}}
\]