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is there any easy method to find coefficient of binomial&multinomial expansion?pls reply soon....

is there any easy method to find coefficient of binomial&multinomial expansion?pls reply soon....

Grade:11

1 Answers

Jitender Singh IIT Delhi
askIITians Faculty 158 Points
9 years ago
Ans:
Hello Student,
Please find answer to your question below

To easily find the coefficient of the binomial and multinomial expansion, you should follow the following points:
Sum of indices of x & a in the expansion (x+a)nequals the index of (x+a).
Number of terms are one more than the index of the expansion.
The binomial coefficient from the beginning and the end are equal.
(r+1)thterm from the first
nCrxn-rar
(k+1)thterm from the last
{(n+1)-(k+1)+1}thfrom the beginning

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