Question

Expand (1 + 3x)4 using the Binomial Theorem.

Answer 1

donkey work
look at the link under "expanded form" for the answer
http://www.wolframalpha.com/input/?i=%281+%2B+3x%29^4+

Answer 2

you should see this \[81 x^4+108 x^3+54 x^2+12 x+1\]

Answer 3

yah thanks so much! I didn't realize wolfram alpha expanded thanks! :)

Answer 4

you can do all the work if you like
using the binomial
\[(a+b)^4=a^4+\binom{4}{1}a^3b+\binom{4}{2}a^2b^2+\binom{4}{3}ab^3+b^4\]

Answer 5

yw