Determining if the Expression is a Polynomial

A polynomial is a mathematical formula that involves the addition of powers in one or more variables, each multiplied by a specific coefficient. To ascertain if an expression falls into the category of a polynomial, ensure that it only encompasses constants, variables, positive integer exponents, alongside the operations of addition, subtraction, and multiplication. Expressions with division by a variable or those containing negative or decimal exponents are not deemed as polynomials.