Understanding Parts of Expressions

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Term

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A single number, variable, or product of numbers and variables

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Coefficient

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The numerical factor of a term with a variable

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Variable

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A symbol, usually a letter, representing an unknown value

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Constant

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A term without a variable

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Expression

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A combination of terms separated by + or - signs

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Polynomial

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An expression with multiple terms

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Monomial

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An expression with only one term

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Binomial

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An expression with two terms

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Trinomial

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An expression with three terms

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Like Terms

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Terms with the same variable raised to the same power