A polynomial is an expression that can be written in the form $a_n x^n + a_{n-1} x^{n-1} + \ldots + a_2 x^2 + a_1 x + a_0$, where $a_n, a_{n-1}, \ldots, a_2, a_1, a_0$ are real numbers and $n$ is a non-negative integer. Looking at the given expression $2 x-3
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