Question

How to tell if an expression is a polynomial?

Answer 1

if it has more than one term (if there is a plus or minus sign when the equation is at its simplest form)

2x = no

2x^(2) = no

2x + 5x = no

2x^(2)+5x^(2) = no

2x^(2)+5x = yes

2x^(3)+5x^(2)+2x = yes