Solve the following

Question:

(–9)3 ÷ (–9)8 is equal to:

(a) (9)5 

(b) (9)-5 

(c) (– 9)5

(d) (– 9)-5

Solution:

(d) (– 9)-5

Explanation: (–9)3 ÷ (–9)8 = (-9)3-8 = (-9)-5

(By the law of exponents: a÷ an=am-n)

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