Question

what is (x+2)^8 ?

Answer 1

Binomial expansion

Answer 2

can you give the answer ?

Answer 3

When n=8 , r=0
\[^{n}C _{r}(a)^{r}(b)^{8}=\]
\[^{n}C _{r+1}(a)^{r}(b)^{7}=\]
\[^{n}C _{r+2}(a)^{r}(b)^{6}=\]
\[^{n}C _{r+3}(a)^{r}(b)^{5}=\]
Work your way down untill
\[^{8}C _{8}(a)^{8}(b)^{0}=\]

Answer 4

[(x+4y)^8]

Answer 5

http://www.wolframalpha.com/input/?i=expand+%28x%2B2%29^8