the coefficients of the expanded form of are contained in the 6th row of Pascal's triangle ...
1 , 5 , 10 , 10 , 5 , 1
note that the exponents of start at 5 and decrease to 0 ... and the exponents of start at 0 and increase to 5.
now, replace with and with
and so on
thank you so much for taking you rtime to help me skeeter. but i don't see how you knew to use those numbers? is there anyway you could explain a little more deep. im sorry to ask so much. just don't understand this stuff. when i look at it all i see is a dark forest lol.