RaymirNice3384 RaymirNice3384

09-03-2018
Mathematics

contestada

What is the coefficient of the term x7y in the expansion of (x + y)^8?

a1
b8
c28
d56,

Respuesta :

Kalahira Kalahira

17-03-2018

The coefficient for x^7*y is equal to 8Choose7 which is 8!/7! which is 8, or answer b. Pascal's triangle may be used to capture this as well, or use the exponent as above.

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