For any two non-zero rational numbers a and b,
Question:
For any two non-zero rational numbers a and b, a4 ÷ b4 is equal to
(a) (a ÷ b)1
(b) (a ÷ b)0
(c) (a ÷ b)4
(d) (a ÷ b)8
Solution:
(c) (a ÷ b)4
This is one of the basic exponential formulae, i.e. $(a \div b)^{n}=a^{n} \div b^{n}$.