Thanks for your guys' help. I tried the two cases n=1 and n=2 but i am still lost. Its a homework question due tomorrow that I don't need to understand how to do it until the test in a couple weeks.
Use the dimension theorem to show that every polynomial p(x) in Pn can be written in the form p(x)=q(x+1)-q(x) for some polynomial q(x) in Pn+1.
I need to see all the steps so that I understand how to do it.
PLease and Thank you