3. What is the coefficient of 25y²z² in the expansion of (x + y +22)⁹?

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.5: The Binomial Theorem
Problem 21E
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3. What is the coefficient of x³y²z² in the expansion of (x + y + 2z)⁹?
Transcribed Image Text:3. What is the coefficient of x³y²z² in the expansion of (x + y + 2z)⁹?
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