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1.2 Properties of Real Numbers day 1.notebook Algebra 2 August 20, 2015 Warm up 8/20/15 1. Use set builder notation to represent: x≠10 All negative multiples of 5 2. Use interval notation to represent the following: x≠10 23>x 1≤x<24 3. Use roster notation to represent the following: (3, 8) Positive multiples of 7 The first 8 letters of the alphabet. 1.2 Properties of Real Numbers Property Identity Inverse Commutative Associative Closure property Distributive property Reflexive property Symmetric property Transitive property Substitution property Addition Multiplication Algebra 1.2 Properties of Real Numbers day 1.notebook August 20, 2015 Ex 1: Algebra Step 6a + (8b + 2a) Property/Justification given 6a + (2a + 8b) (6a + 2a) + 8b (6 + 2)a + 8b 8a + 8b Ex. 2: Algebra step Justification HW #3 Sec. 1.2: Properties practice