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# Polynomials

Polynomials are expressions summing powers with zero (constant polynomials), one (univariate polynomials), two (bivariate polynomials), three (trivariate polynomials), or more variables. For example, ${\displaystyle \scriptstyle 4xy^{2}+7x-y+1\,}$ is a polynomial (e.g. a bivariate quadrinomial). The monomials 12 × 7 and ${\displaystyle \scriptstyle \pi ^{2}\,}$ are constant polynomials. Polynomials may have one term (monomials), two terms (binomials), three terms (trinomials), etc.

## Classification of polynomials by degree

The degenerate

0. constant polynomials (degree 0)

and

1. Linear polynomials (degree 1)