Expanding the binomial - need some help!!

[KingAce]

I really need some help expanding the binomial below... also, could you please show work so I know how to do it (I'm prepping for my final btw)

(2x^2 - 5y^4)^6


Thanks so much for your help!

 

[pka]

Expand this sum.
\(\displaystyle \sum\limits_{k = 0}^6 {\binom{6}{k}\left( {2x^2 } \right)^{6 - k} \left( { - 5y^4 } \right)^k }\)

 

[Loren]

http://hyperphysics.phy-astr.gsu.edu/hbase/alg3.html#bt