Algebraic Expressions

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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 (like x or y), and operations (like addition, subtraction, multiplication, and division).

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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 the variables with given numbers.

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8

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17

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9

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20

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8

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What is a variable in algebra?

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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?

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A coefficient is a number that is multiplied by a variable in an algebraic expression.

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What is the difference between an expression and an equation?

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An expression is a combination of numbers, variables, and operations without an equality sign, while an equation states that two expressions are equal.