Algebra SOL Review 1

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What is an algebraic expression?

Back

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 does it mean to simplify an expression?

Back

To simplify an expression means to combine like terms and reduce it to its simplest form. For example, 2x + 3x simplifies to 5x.

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What is a variable in algebra?

Back

A variable is a symbol, often a letter, that represents an unknown value in an expression or equation. For example, in the expression x + 2, x is the variable.

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What is the difference between an equation and an expression?

Back

An equation is a mathematical statement that asserts the equality of two expressions, while an expression is a combination of numbers, variables, and operations without an equality sign. For example, 2x + 3 = 7 is an equation, while 2x + 3 is an expression.

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What does it mean to solve an equation?

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To solve an equation means to find the value of the variable that makes the equation true. For example, solving 2x + 3 = 7 gives x = 2.

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What are like terms?

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Like terms are terms in an expression that have the same variable raised to the same power. For example, 4x and 2x are like terms, while 4x and 4y are not.

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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 each term inside a parentheses.

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What is a coefficient?

Back

A coefficient is a numerical factor in a term of an algebraic expression. For example, in the term 5x, 5 is the coefficient.

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What is a constant in algebra?

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A constant is a fixed value that does not change. For example, in the expression 3x + 4, the number 4 is a constant.

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What is the purpose of using parentheses in algebra?

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Parentheses are used to indicate which operations should be performed first in an expression. For example, in the expression (2 + 3) × 4, you perform the addition first.