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Plz answer:

Asked by 6th May 2010, 3:04 PM
Answered by Expert
Answer:

(a+b)3 = a3 + b3 + 3ab2 + 3a2b

Using the above identity,

For a = 9q and b = 1

The algebraic expression (9q + 1)3 can be expanded as:

(9q + 1)= 729q3 + 1+3 x 81q2 x 1 + 3 x 1 x 9q

               = 729q3 + 1+ 243q2 + 27q

Answered by Expert 6th May 2010, 3:38 PM
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