Definition:Root of Polynomial

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Definition

Let $R$ be a commutative ring with unity.

Let $f \in R \sqbrk x$ be a polynomial over $R$.


A root in $R$ of $f$ is an element $x \in R$ for which $\map f x = 0$, where $\map f x$ denotes the image of $f$ under the evaluation homomorphism at $x$.


Also known as

A root of a polynomial is also known as a zero.


Sources