destiny8568 destiny8568

02-01-2018
Mathematics

contestada

What is the coefficient of x 9y 4 in the expansion of (2x + 3y) 13?

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sqdancefan sqdancefan

16-10-2019

Answer:

29,652,480

Step-by-step explanation:

The term of interest is ...

(13C9)(2x)^9·(3y)^4 = 715·512·81·x^9·y^4 = 29,652,480·x^9·y^4

The coefficient is 29,652,480.

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