Question

Find the indicated terms in the expansion of the given binomial.
The first three terms in the expansion of

(x+1/x)^40

first term

second term

third term

Answer 1

x^40 + 40 x^38 + 780 x^36

Answer 2

https://socratic.org/questions/how-do-you-find-the-fourth-term-of-a-b-8

as an example

Answer 3

an expansion of ... (a + b)^k

for the nth term
... (k)C(n-1) a^(k-n+1) b^(n-1)

Answer 4

Thanks

Answer 5

Scott How do you get 780x^36 for the 3rd term? Thx