For a non-zero integer x,


For a non-zero integer x, x7 ÷ x12 is equal to:

(a) x5 

(b) x19 

(c) x-5 

(d) x-19


(c) x-5

Explanation: x7 ÷ x12 = x7-12 = x-5

(By the law of exponents: a÷ an=am-n)

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