Hey!
-----------------------------------------------
Answer:
81
↓ ↓
9 9
↓ ↓ ↓ ↓
3 3 3 3
There are four three's! So that means 4 is the exponent.
3^4 = 81
-----------------------------------------------
Step-by-step explanation:
A prime factorization tree is something where when you solve the ending number you can solve with an exponent of how many of that number to get the starting result. In this case the prime number tree for 81 ends with 3, which is a prime number.
-----------------------------------------------
Hope This Helped! Good Luck!