Question: Is this expression greater or smaller than zero? evalb ( or is) command is not working

Hello everyone! Hope you´re doing fine. For work I have to compare two terms with each other and say which one is greater. I did this by hand but it would be very helpful if maple could do this for me. I made some asummptions about the parameters and used the evalb command but unfortunately maple had no answer for me. I also used the is command but this didn´t work either. 

Can someone please tell me what i am doing wrong or if maple can do this at all?
Many thanks!!

Best wishes



Please Wait...