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How to calculate the cofficent of x^py^qz^r in the expansion of (x+y+z)^n where p+q+r=n

How to calculate the cofficent of x^py^qz^r in the expansion of (x+y+z)^n where p+q+r=n

Grade:11

1 Answers

H AGGARWAL
90 Points
7 years ago
the coffiecient of the required can be obtained by using a shortcut formula n!÷p!q!r! Only in the case when p+q+r =n but if this condition is not given then use bionomial expansions.

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