What is a second degree polynomial? Is every trinomial a second degree polynomial?

Question

(if not give an example as to why it is not a second degree polynomial)

Answer 1

A second degree polynomial in x is an expression of the form

 

ax² + bx + c

 

where a ≠ 0.

 

Not all trinomials are second degree polynomials.  Example:

 

3x⁵ + x⁴ + 2