Just looking at what you have up above, I'm guessing they would like for you to rewrite each polynomial such that you have the leading term out front and then write the terms (in terms of exponents) from left to write in a descending order. So the following would be rewritten as:
1) x^2-2x+3
2) Written as is
3) -3x^4+25x^3+5x^2.
Here you go!