B4 Simplify the expression $3^{2 n-1} \cdot 4^{n+1}+9^{n+1} \cdot 2^{2 n-1}+6^{2 n-1}$ and write it in the form of a power with base 6.

(7 points)

Space for solving tasks of set $B$.

![](https://cdn.mathpix.com/cropped/2024_06_07_c987701c9bb62194911fg-06.jpg?height=83&width=449&top_left_y=200&top_left_x=1456)

## PROBLEMS FOR THIRD YEAR STUDENTS

Time for solving: 90 minutes. In set A, a correct answer will be scored 2 points, while an incorrect answer will result in a deduction of half a point. Write the answers of set A in the left table.
![](https://cdn.mathpix.com/cropped/2024_06_07_c987701c9bb62194911fg-06.jpg?height=168&width=1194&top_left_y=578&top_left_x=448)