Algebraic Expressions with Exponents

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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 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 specific numbers.

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What is an exponent?

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What is the sum of 7 and 2n?

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The expression 7 + 2n represents the sum of 7 and 2 times n.

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How do you solve the equation 8y = 48?

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To solve for y, divide both sides by 8: y = 48 / 8 = 6.

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To solve for a, multiply both sides by 2: a = 18 * 2 = 36.

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To find v, multiply both sides by 5: v = 9 * 5 = 45.

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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.