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Section 1.2  Algebraic Expressions And Models A
 

Section 1.2 Algebraic Expressions And Models A

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Lecture notes for Section 1.2

Lecture notes for Section 1.2

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    Section 1.2  Algebraic Expressions And Models A Section 1.2 Algebraic Expressions And Models A Document Transcript

    • Section 1.2 ­ Algebraic Expressions and Models A.notebook July 29, 2009 Section 1.2 ­ Algebraic Expressions and Models Vocab  Numerical Expression: consists of  Terms numbers, operations, and grouping  symbols.     Example: 5 + 7; 2(4 ­ 2) Algebraic Expression: like above,  with variables     Example: 2x + 3; 5y(3y ­ 7) 1
    • Section 1.2 ­ Algebraic Expressions and Models A.notebook July 29, 2009 Order of  1. Operations inside grouping  Operations symbols 2. Evaluate powers 3. Multiply & divide left to right 4. Add & subtract left to right Using  Order of  ­4 + 2(­2 + 5)2  Operations 2
    • Section 1.2 ­ Algebraic Expressions and Models A.notebook July 29, 2009 Evaluating  Evaluate ­3x2 ­ 5x + 7 when x = ­2 Algebraic  Expressions Simplifying  Simplify 2(x + 1) ­ 3(x ­ 4) Algebraic  Expressions 3
    • Section 1.2 ­ Algebraic Expressions and Models A.notebook July 29, 2009 Homework Section 1.2 Worksheet #2 ­ 42 even 4