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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

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Solution

(c)left(adiv b right )^4
This is one of the basic exponential formulae, i.e. left(adiv b right )^n = a^n div b^n.

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