Algebraic Expressions/Equations Flashcard Review

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What is an algebraic expression?

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An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols. For example, 3x + 5 is an algebraic expression.

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What does it mean to simplify an expression?

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To simplify an expression means to combine like terms and reduce it to its simplest form. For example, 7x + 4 + 19x - 3 simplifies to 26x + 1.

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What are like terms?

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Like terms are terms that have the same variable raised to the same power. For example, 3x and 5x are like terms, but 3x and 4y are not.

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How do you evaluate an expression?

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To evaluate an expression, substitute the values of the variables into the expression and perform the operations. For example, to evaluate n^2 * 2 when n=4, substitute 4 for n: 4^2 * 2 = 32.

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32

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What is a variable in algebra?

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A variable is a symbol, usually a letter, that represents an unknown value. For example, in the expression 5x + 3, x is the variable.

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What is an equation?

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An equation is a mathematical statement that asserts the equality of two expressions, typically containing one or more variables. For example, 2x + 3 = 7 is an equation.