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Bell Ringer

Bell Ringer. T = Evaluate the Expression and the Exponent. Describe the difference between a math expression and equation? Provide and example of each. Vocabulary. - Algebraic Expression An expression that contains numbers, operations and variables. - Equation

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Bell Ringer

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  1. Bell Ringer T = Evaluate the Expression and the Exponent Describe the difference between a math expression and equation? Provide and example of each.

  2. Vocabulary - Algebraic Expression An expression that contains numbers, operations and variables. - Equation Mathematical sentence that contains an equals sign between two expressions. Good to Know! Algebraic expressions can be evaluated when the values of the variables are given.

  3. Evaluating Expressions • Rewrite the expression by replacing the variables with the given values. • Follow the order of operations to compute the value of the expression.

  4. Example 1 Evaluate the algebraic expression: a. 2x – 8 when x = 4 Write the expression.2x – 8 Substitute 4 for x.2(4) – 8 Multiply.8 – 8 Subtract.0

  5. Powers, Bases and Exponents 34 = 3  3  3  3 Exponent Base Expanded Form Power Read as “3 to the 4th power”

  6. Example 2 • Find the value of each. • 42 2. (2 − 9)2 • Write 53 in expanded form

  7. Exit Problems Evaluate each expression when x = 5. • 7x – 6 • (x – 1)2 29 16 –2

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