Algebraic Expressions & Models L1.2. Welcome Back! Get your stuff out and be ready to go when the bell rings!
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1 Welcome Back! Get your stuff out and be ready to go when the bell rings! 1
2 2
3 Variable: 3
4 Variable: Letter that represents one or more numbers 4
5 Variable: Letter that represents one or more numbers Expression: 5
6 Variable: Letter that represents one or more numbers Expression: Basic math sentence w/out equal sign 6
7 Variable: Letter that represents one or more numbers Expression: Basic math sentence w/out equal sign Collection of #'s, variables, operators, grouping symbols 7
8 Variable: Letter that represents one or more numbers Expression: Basic math sentence w/out equal sign Collection of #'s, variables, operators, grouping symbols Simplify an expression: 8
9 Variable: Letter that represents one or more numbers Expression: Basic math sentence w/out equal sign Collection of #'s, variables, operators, grouping symbols Simplify an expression: Boil it down to simplest form... reduce 9
10 Variable: Letter that represents one or more numbers Expression: Basic math sentence w/out equal sign Collection of #'s, variables, operators, grouping symbols Simplify an expression: Boil it down to simplest form... reduce Not solving! There is no equal sign! 10
11 Variable: Letter that represents one or more numbers Expression: Basic math sentence w/out equal sign Collection of #'s, variables, operators, grouping symbols Simplify an expression: Boil it down to simplest form... reduce Not solving! There is no equal sign! Evaluate an expression: 11
12 Variable: Letter that represents one or more numbers Expression: Basic math sentence w/out equal sign Collection of #'s, variables, operators, grouping symbols Simplify an expression: Boil it down to simplest form... reduce Not solving! There is no equal sign! Evaluate an expression: Plug #'s into the express, see what you get 12
13 Variable: Letter that represents one or more numbers Expression: Basic math sentence w/out equal sign Collection of #'s, variables, operators, grouping symbols Simplify an expression: Boil it down to simplest form... reduce Not solving! There is no equal sign! Evaluate an expression: Plug #'s into the express, see what you get 13
14 What is a term? 14
15 What is a term? Something being added or subtracted 15
16 What is a term? Something being added or subtracted Identify the terms: 16
17 What is a term? Something being added or subtracted Identify the terms: a + b 3x 2 4x
18 What is a factor? 18
19 What is a factor? Something being multiplied 19
20 What is a factor? Something being multiplied Identify the factors: 20
21 What is a factor? Something being multiplied Identify the factors: 3x (x 4)(x + 2) 2( ) 21
22 Exponent: Short hand for repeated multiplication (factors) Works only on the thing immediately to the left of it. 22
23 23
24 PEMDAS 24
25 PEMDAS Please 25
26 PEMDAS Please Excuse 26
27 PEMDAS Please Excuse My 27
28 PEMDAS Please Excuse My Dear 28
29 PEMDAS Please Excuse My Dear Aunt 29
30 PEMDAS Please Excuse My Dear Aunt Sally 30
31 PEMDAS Please Excuse My Dear Aunt Sally 31
32 PEMDAS P E M D A S Please Excuse My Dear Aunt Sally 32
33 PEMDAS P E M D A S Please Excuse My Dear Aunt Sally 33
34 PEMDAS Parenthesis E M D A S Please Excuse My Dear Aunt Sally 34
35 PEMDAS Parenthesis Exponents M D A S Please Excuse My Dear Aunt Sally 35
36 PEMDAS Parenthesis Exponents Multiply D A S Please Excuse My Dear Aunt Sally 36
37 PEMDAS Parenthesis Exponents Multiply Divide A S Please Excuse My Dear Aunt Sally 37
38 PEMDAS Please Excuse My Dear Aunt Sally Parenthesis Exponents Multiply } do * & at same time, left to right Divide A S 38
39 PEMDAS Please Excuse My Dear Aunt Sally Parenthesis Exponents Multiply } do * & at same time, left to right Divide Add S 39
40 PEMDAS Please Excuse My Dear Aunt Sally Parenthesis Exponents Multiply } do * & at same time, left to right Divide Add Subtract 40
41 PEMDAS Parenthesis Exponents } Please Excuse My Dear Aunt Sally Multiply do * & at same time, left to right Divide Add } do + & at same time, left to right Subtract 41
42 Simplify: 2( ) 42
43 Simplify: (25a 3) 8 43
44 Evaluate the following when x = 2: (3x + 7) 3 44
45 Evaluate the following when x = 2: (3x)
46 Evaluate the following when x = 2: 3x
47 47
48 Pg 12, #1 6, 7 19 odd, 23 47, 49 53, 61, 63 Pg 17, #
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