A polynomial is a mathematical expression made by adding or subtracting terms that each have a number and a variable raised to a whole-number power, like 3x² − 2x + 5. It’s a basic building block in algebra and calculus.
From *poly-* “many” and *nomial* from Latin *nomen* “name,” via *binomial* and *trinomial*. It originally meant an expression with many terms or “names.”
The word just means “many terms,” so a polynomial is more like a list than a monster. Once you see that it’s just a sum of simple pieces, the scary-looking symbols start to feel like Lego bricks instead of a maze.
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