For a non-zero rational number p,

Question:

For a non-zero rational number p, p13 ÷ p8 is equal to

(a) p5 

(b) p21 

(c) p-5 

(d) p-19

Solution:

(a) p5

(By law of exponent: (a)m÷(a)n = (a)m-n)

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