How do you determine if #a-a^2# is a polynomial and if so, how do you identify if it is a monomial, binomial, or trinomial?
Any expression in a form:
is a polynomial of variable
The expression given can be written as:
So it is in the form given above, so it is a polynomial.
To determine if it is a mono-, bi-, or trinomial you have to check the number of elements in the sum. Here we have 2 elements: