(–9)3 ÷ (–9)8 is equal to:
(a) (9)5
(b) (9)-5
(c) (– 9)5
(d) (– 9)-5
Explanation: (–9)3 ÷ (–9)8 = (-9)3-8 = (-9)-5
(By the law of exponents: am ÷ an=am-n)
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