### Day 21 - Work Day - 09.16.14

Bell Ringer

1. What is the prime factorization of 1890?

1. 2 * 3 * 105

2. 2 * 3 * 3 * 3 * 35

3. 2 * 3 * 3 * 105

4. 2 * 3 * 3 * 3 * 5 * 7

5. none of the above

2. Factor the following: x2 + 6x + 8.

1. (x - 2)(x - 4)

2. (x - 2)(x + 4)

3. (x + 2)(x - 4)

4. (x + 2)(x + 4)

5. none of the above

3. Factor the following: x2 - 10x + 16

1. (x - 2)(x + 8)

2. (x + 2)(x - 8)

3. (x - 2)(x - 8)

4. (x + 2)(x + 8)

5. none of the above

4. Factor the following: x2 + x - 12

1. (x - 3)(x - 4)

2. (x + 3)(x + 4)

3. (x + 3)(x - 4)

4. (x - 3)(x + 4)

5. none of the above

5. Factor the following: x2 - 7x - 18

1. (x + 2)(x - 9)

2. (x + 2)(x + 9)

3. (x - 2)(x - 9)

4. (x - 2)(x + 9)

5. none of the above

Review
• Monomials
• Polynomials
• Multiplying Polynomials by Monomials
• Multiplying Polynomials by Polynomials
• Special Products

Lesson
• Intro to Factoring
• Section 9-3
• Practice #5-9 (odds)
• Checkpoint 1 - #4, 6, 8
• Practice #11-15 (odds)
• Checkpoint 2 - #10, 12, 14, 16
• Practice #17-33 (odds)
• Checkpoint 3 - #30, 32, 34
• Practice #37-53 (odds)
• Checkpoint 4 - #48, 50, 52

Exit Ticket
• Posted on the board at the end of the block
Lesson Objective(s)
• How can expressions of the form ax^2 + bx + c be factored?

Standard(s)

Mathematical Practice(s)
• #1 - Make sense of problems and persevere in solving them
• #2 - Reason abstractly and quantitatively
• #3 - Construct viable arguments and critique the reasoning of others
• #6 - Attend to precision
• #7 - Look for and make use of structure