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, and operation symbols. For example, 3x + 5 is an algebraic expression.

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What is a variable in algebra?

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A variable is a symbol, usually a letter, that represents an unknown value. For example, in the expression 2x + 3, 'x' is the variable.

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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 4x + 7, '7' is a constant.

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What is a coefficient?

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

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What does it mean to simplify an expression?

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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 are like terms?

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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 result of 11z - 12z?

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The result is -z.

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If z = 31, what is 30 - z?

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The result is -1.

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What is the literal coefficient of 567817xy?

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The literal coefficient is xy.

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What is the sum of 123xyz + 123xyz?

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The sum is 246xyz.