Puzzle time

[Steven G]

Pick any three digit number. Then pick any digit.
Using addition, subtraction, exponents and concatenation of digits write the three digit number using as few of the digit you chose and only using that digit.

For example 814 and 2: 814 = 22(2+2+2)^2 + 22

 

[Otis]

484 and 2: 22^2

Using addition, subtraction, exponents and concatenation of digits

22(2+2+2)^2 + 22

Multiplication, too?
729 and 9: 9(9)(9)

And, for those who believe that 0^0 is defined,
100 and 0: 0^0 0 0

 

[Steven G]

484 and 2: 22^2


Multiplication, too?
729 and 9: 9(9)(9)

And, for those who believe that 0^0 is defined,
100 and 0: 0^0 0 0

Yes, multiplication too.