Answer :
(7.57)^-4 * (7.57)^4
Add the exponents and keep the base:
7.57^(-4 + 4)
7.57^0
Anything to the power of 0 is one.
1
Add the exponents and keep the base:
7.57^(-4 + 4)
7.57^0
Anything to the power of 0 is one.
1