Evaluating Algebraic Expressions

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What is an algebraic expression?

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How do you evaluate an algebraic expression?

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To evaluate an algebraic expression, substitute the values of the variables into the expression and perform the operations according to the order of operations.

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What does the absolute value symbol |x| represent?

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The absolute value |x| represents the distance of x from 0 on the number line, always as a non-negative value.

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Evaluate the expression |a - 5| + 2 when a = -15.

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What is the order of operations in mathematics?

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The order of operations is Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right), often remembered by the acronym PEMDAS.

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What is a variable in an algebraic expression?

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A variable is a symbol, often a letter, that represents an unknown value in an expression or equation.

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What is a coefficient in an algebraic expression?

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