Ireally need on this question and always post it but never get a response =(

If both ends of a polynomial both go up or both go down, then  the highest power is even
if one end of a polynomial goes up while the other goes down, or vice versa, then the highest power is odd

a positive leading coefficient will result in the right end going upwards
a negative leading coefficient will result in the left end going downwards

Not so sure about this one sorry.

Where are the