A polynomial is a mathematical term that consists of a sum of products of coefficients and variables. Some examples are:

* 2x + 3
* 4x² + 3x - 1
* 5xy - 2y^4 + 3x, which is a polynomial with 2 variables.

Polynomials are widely used in many fields of Mathematics such as linear algebra and analysis. They are also used in computer graphics for drawing smooth curves called splines.
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