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§ 1.4

Introduction to Variable Expressions and Equations. § 1.4. Exponents. Exponential notation is used to write repeated multiplication in a more compact form. exponent. 3 4. base. The expression 3 4 is called an exponential expression . Example: Evaluate 2 6 . Order of Operations.

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§ 1.4

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  1. Introduction to Variable Expressions and Equations § 1.4

  2. Exponents Exponential notation is used to write repeated multiplication in a more compact form. exponent 34 base The expression 34 is called an exponential expression. Example: Evaluate 26.

  3. Order of Operations

  4. Using the Order of Operations Example: Simplify the expression. Simplify numerator and denominator separately Divide. Add. Simplify.

  5. Evaluating Algebraic Expressions

  6. Determining Whether a Number is a Solution – 7 is not a solution.

  7. Translating Phrases

  8. Translating Phrases Example: Write as an algebraic expression. Let x to represent the unknown number. a.) 5 decreased by a number b.) The quotient of a number and 12 a.) In words: 5 decreased by a number – Translate: 5 x The quotient of b.) In words: a number and 12 Translate:  x 12

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