Simplify \(\left(\frac{2+\sqrt{3}}{2-\sqrt{3}}\right)^2\).
What are the values of x in the following equation?
\( 3^{2x+1} - 3^{x} = 3^{x+3} - 3^{2} \)
Select the option that can replace the question mark (?) in the following series.
\( \frac{K}{11} \), \( \frac{15}{O} \),\( \frac{S}{19} \), \( \frac{23}{W} \), \( \frac{A}{1} \), \( \frac{?}{?} \)
\( \frac{5}{E} \)
\( \frac{6}{E} \)
\( \frac{E}{5} \)
\( \frac{5}{F} \)