Sunday

September 25, 2016
Posted by **Anonymous** on Sunday, February 17, 2013 at 4:18am.

- maths-urgently needed -
**Reiny**, Sunday, February 17, 2013 at 8:29amYou might want to look at the patterns of "trinomial expansion" and its connection to Pascal's triangle

Here is a very neat webpage.

They expand (a+b+c)^5

You have to expand (a+b+c)^4

http://www.rowan.edu/open/depts/math/osler/Trinomial_triangle.pdf