Front

What is an algebraic expression?

Back

An algebraic expression is a mathematical phrase that can include numbers, variables, and operation symbols. It does not have an equality sign.

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What are coefficients in an algebraic expression?

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Coefficients are the numerical factors that multiply the variables in an algebraic expression. For example, in 8a + b + 9, the coefficients are 8 (for a) and 1 (for b).

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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 arithmetic operations according to the order of operations.

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What is the order of operations in mathematics?

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The order of operations is a set of rules that determines the sequence in which calculations are performed. It is often remembered by the acronym PEMDAS: Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction (from left to right).

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What does it mean to simplify an algebraic expression?

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Simplifying an algebraic expression means to combine like terms and reduce the expression to its simplest form.

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What is a variable in an algebraic expression?

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A variable is a symbol, usually a letter, that represents an unknown value in an algebraic expression.

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How do you find the value of an expression when given specific values for its variables?

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Substitute the given values for the variables into the expression and then perform the calculations to find the value.

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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 and includes an equality sign.

Front

What is the result of evaluating the expression 6a + 2(c - b) when a = 2, b = 1, c = 9?

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The result is 28.

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What is the result of evaluating the expression 2x + 5(y - 1) when x = 8 and y = 5?

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The result is 36.