Alg 1 Evaluate Algebraic Expressions Flashcard

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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.

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Define a variable in algebra.

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A variable is a symbol (often a letter) that represents one or more numbers.

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What does it mean to evaluate an expression?

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To evaluate an expression means to calculate its value by substituting variables with numbers.

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What is the formula for the perimeter of a rectangle?

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The perimeter P of a rectangle is given by the formula P = 2(length + width).

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What is the absolute value of a number?

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The absolute value of a number is its distance from zero on the number line, regardless of direction.

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What is the square root of a number?

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The square root of a number x is a value that, when multiplied by itself, gives x.