8-21
9- -16 i think lemme do the next ones
The answer that you should get is A
Answer with Step-by-step explanation:
We are given that an expression

Binomial expansion o f
is given by
=
a. We have to find the coefficient of 

Term is 
Coefficient =
b.Term in which
is 
Coefficient =
c.We have to find the coefficient of 
Term is 
Coefficient =
I think it’s X=-3+(the square root of 2)