Coefficient of x^2y^3z^4 in the expansion of (x+y+z) ^9 is equal to
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The coefficient of the term in the expansion of is 1260.
Given,
An expression: .
To Find,
The coefficient of the term .
Solution,
The method of finding the coefficient of the term in the expansion of is as follows -
We know by the multi-binominal theorem that the coefficient of the term in the expansion of is .
Here in this problem, p = 2, m = 3, l = 4, n = 9, a = b = c = 1.
So putting all the values in the formula, the coefficient will be
Hence, the coefficient of the term in the expansion of is 1260.
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