b. 5⁵/5²
= 5⁵⁻²
= 5³
= 1/5⁻³
c. b⁻⁵/b⁻³
= b⁵⁺³
= b⁸
= 1/b⁻⁸
d. r^6 x r^-6
= (r⁻⁶)/r⁻⁶
Editor: Maria Nofianti