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 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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