Question

Use division algorithm to show that the cube of any positive integer is of the form 9 m,
9m + 1 or 9m + 8.​

Answer 1

Answer:

Let a and b be two positive integers, and a>b

a=(b×q)+r where q and r are positive integers and  

0≤r<b

Let b=3 (If 9 is multiplied by 3 a perfect cube number is obtained)  

a=3q+r where 0≤r<3

Step-by-step explanation:

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Answer 2

Answer:

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Step-by-step explanation:

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