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

a1

b8

c28

d56,

Question

Mathematics

Alicia Johnston

18 May, 20:19

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

a1

b8

c28

d56,

+2

Answers (1)

Know the Answer?

Malakai Hunter · Answer 1

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.

What is the coefficient of the term x7y in the expansion of (x + y) ^8?a1b8c28d56,

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

a1

b8

c28

d56,