What is a polynomials.

Dear Student , A polynomial is an expression consisting of variables (also called indeterminates) and coefficients, that involves only the operations of addition, subtraction, multiplication, and non-negative integer exponents of variables.Specifically , it is an expression containing two or more than two algebraic terms. For example - A polynomial of a single indeterminate(or variable ), x, is x^2 − 4x + 7. Regards