Originally Posted by

**ronanbreslin** I am an an Art School lecturer who studied engineering many years ago. I am now re-acquainting myself with the wonderful world of maths in order to develop projects in ambisonic sound. Working my way through the above book but stumped on a basic binomial expansion problem that has no solution apparent in the book.

show that (how do I insert mathematical symbols?) ∑ - well I got that but how do I do the rest (powers etc.)? Oh well, this request help is stumped until some kind person reveals to me how to easily represent maths symbols on this forum.Please help a poor art school lecturer engage with the real art of mathematics ;-)

Please see attachment, not sure yet how to insert this into post. Ta much to all of you who have a look.