How to Find the Coefficient of a Term of a Binomial Expression without Expanding. [HD]

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United States Mr. Math Expert
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Without actually expanding, find the coefficient of x^4 * y^3 * y^2 in the expression of (3x - 4y + 2z)^9.

Binomial expression. Multinomial coefficient. Binomial expansion.

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Tags:
math
mathematics
multinomial coefficient
binomial expansion