Question 25379
the binomial theorem. Look at:


{{{(a+b)^10}}} is {{{a^10b^0 + a^9b^1 + a^8b^2}}} + ... + {{{a^0b^10}}}


and each term has a coefficient, calculated from a formula or by creating Pascals triangle... 


http://en.wikipedia.org/wiki/Pascal%27s_triangle


Jon