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Mr. Borosky Section 1.2 1.2 Evaluate & Simplify Algebraic Expressions p. 10-17 Algebra 2 Objective: 1. You will evaluate and simplify expressions involving real numbers. Numerical Expression – consists of numbers, operations, and grouping symbols. Power – an expression formed by repeated multiplication of the same factor. Exponent – represents the number of times the base is used as a factor. Base – the number or expression that is used as the factor of a repeated multiplication. Order of Operations Please Excuse My Dear Aunt Sally 1. Parentheses (or other grouping symbols) 2. Exponents (Powers) 3. Multiplication or Division in ORDER from Left to Right 4. Addition or Subtraction in ORDER from Left To Right Variable – a letter used to represent one or more numbers. Algebraic Expression – an expression involving variables Evaluating an Expression – when you simplify the expression to find its answer Terms – the parts of an expression that are added together. Variable Term – a term with a variable(s) Constant Term – term without variables, only a number Coefficient – the number part of a term. Like Terms – terms with the same variables and exponents. like terms add or subtract them. Ex. 5x – 3x = 2x When you have Equivalent Expressions – expressions that have the same value 1.2 Evaluate & Simplify Algebraic Expressions p. 10-17 Page 1 of 1
