Algebra Expressions

Front

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 are variables in algebra?

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Variables are symbols (usually letters) that represent unknown values. In the expression 7x + 6y - 9, x and y are variables.

Front

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.

Front

What is the result of evaluating m² when m = 5?

Back

25

Front

How do you simplify an expression?

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To simplify an expression, combine like terms and perform any operations to make it easier to understand.

Front

What are like terms?

Back

Like terms are terms that have the same variable raised to the same power. For example, 3x and 5x are like terms.

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What is the distributive property?

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The distributive property states that a(b + c) = ab + ac. It allows you to multiply a single term by two or more terms inside a parenthesis.

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What is the difference between an equation and an expression?

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

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What does it mean to combine like terms?

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Combining like terms means to add or subtract terms that have the same variable and exponent.

Front

Evaluate 8a - b if a = 10 and b = 6.

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