Answer:
3^12=531441
7^9=40353607
Explanation:
I used a calculator on these problems because doing it by hand is just too much work.
Essentially it is 3x3x3x3x3x3x3x3x3x3x3x3 (3 multiplied with each other 12 times.)
And 7x7x7x7x7x7x7x7x7 (7 multiplied with each other 9 times.