# 12.3: Simplify Polynomials by Combining Like Terms

Difficulty Level: Basic Created by: CK-12
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Practice Simplify Expressions

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Estimated11 minsto complete
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### Vocabulary Language: English

TermDefinition
Binomial A binomial is an expression with two terms. The prefix 'bi' means 'two'.
Coefficient A coefficient is the number in front of a variable.
constant A constant is a value that does not change. In Algebra, this is a number such as 3, 12, 342, etc., as opposed to a variable such as x, y or a.
like terms Terms are considered like terms if they are composed of the same variables with the same exponents on each variable.
Monomial A monomial is an expression made up of only one term.
Polynomial A polynomial is an expression with at least one algebraic term, but which does not indicate division by a variable or contain variables with fractional exponents.
Trinomial A trinomial is a mathematical expression with three terms.

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