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. $(a \div b)^{n}=a^{n} \div b^{n}$.

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