Binomial theroem

The binomial theroem is that an equation with a power can be expanded. This would be like (x-2)^4 and you would have to expand it out into the four parts to make one whole equation. The easiest way to do this is to use pasacals triangle. 

That is all that you have to do. Start on the left with the first term to the max power. On the last equation it would be to the 4. Then decrease from left to right. Then take the right term and do the same but start on the right and go left. You decrease the power every time. That is all