Sure, I can provide you with the mathematical formula for a polynomial expression. A general polynomial of degree n can be expressed as:

a_n*x^n + a_{n-1}x^{n-1} + ... + a_1x + a_0

Here, x is a variable, a_n to a_0 are constants known as coefficients, and n is a non-negative integer representing the degree of the polynomial. The degree of a polynomial is determined by the highest power of x that appears in the expression.

For example, the polynomial 2x^3 + 3x^2 - 5x + 7 is a third-degree polynomial since the highest power of x is 3.
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