A polynomial is an expression of more than two algebraic terms. These terms have variables and coefficients that only involve addition, subtraction, and multiplication. The variables can only have non-negative exponents, and these exponents typically decrease in size from the left-hand side to the right-hand side of the equation. So, for example, *(2 * x^3) + (2 * x^2) - (3 * x)* is a typical polynomial equation.

Polynomial expressions that have the right variables and coefficients are interesting for our purpose because they graph as a nice upward and downward wave:

If we try to encode the preceding polynomial expression, we'll ...

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