RESULTWhen a binomial expression such as (a+b ) is raised to the power of n where n is a small positive integer, a binomial expansion of the form (a+b)n is obtained such as follows:-

When n=0, (a+b )0=1

n=1, (a+b )1=a+b

n=2, (a+b )2=(a+b ) (a+b )

¿a2+ab+ab+b2

¿a2+2ab+b2

n=3, (a+b )3= (a+b )¿

¿ (a+b )(a2+2ab+b2)

¿a3+2a2b+ab2+a2b+2ab2+b3