Question

http://img651.imageshack.us/img651/2498/page52547.jpg

Answer 1

4

Answer 2

\[\log_{\sqrt{a}}a^2=x \]
\[(\sqrt{a})^{x}=a^2\rightarrow a^{\frac{x}{2}}=a^2\rightarrow x=4\]

Answer 3

you are trying to solve \[(\sqrt{2})^x=a^2\] for x.. oops rsvitale has it, sorry