# Polynomial

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### Definitions from Wordnet 2.0

• a mathematical expression that is the sum of a number of terms
• having the character of a polynomial; "a polynomial expression"

### Definitions from Wiktionary

• a mathematical function that is the sum of a number of terms

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### Polynomial Meaning and Definition in Wikipedia

When you see letters mixed with numbers and arithmetic, like x2+2x-7, there is a good chance that it is a polynomial. Mathematicians, scientists, and engineers use polynomials to solve problems. Polynomials are taught in algebra, which is a gateway course to all technical subjects.

In algebra, when you see letters, numbers, and arithmetic, the understanding is that the letters stand either for numbers you do not know (and may want to find) or for numbers that change during the course of the problem, variables, such as time. If the only arithmetic is addition, subtraction, multiplication, and whole number exponents, then that mixture of letters, numbers, and arithmetic is called a polynomial. If harder operations are used, such as division or square roots, then what you have is an "algebraic expression". A polynomial is an easy-to-use algebraic expression.