New Angler Fish

Congratulations, you got a friend for Jerry and now they share a new habitat. But the first mate still has more problems for you to help him with. If you help him with the problems below, he'll show you a picture of a new species of Angler Fish discovered in June of this year!

Good luck!

Use symbols *, / & ^ for multiplication, division & power.
Put numbers first, then variables.
Use parentheses only when necessary.
For example: 23*x^2/(7*y)

Problem 14 (expression for ?):

Problem 15 (expression for ?):

Solve these problems to see the new angler fish!