kashish's answer to Ashley Ong's Secondary 3 A Maths Singapore question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
kashish
Kashish's answer
9 answers (Tutor Details)
1st
the method here is to find the value of r for which the power of X will be 0 as that will give you the term independent of X. hence we use the general term of the expansion to do this.