Estas son las transparencias del segundo día de mi curso de Cálculo diferencial de Agosto-diciembre de 2012.

1. Day 2
1. Before we start...

2. Day 2
1. Before we start...
1. What is a prime number?

3. Day 2
1. Before we start...
1. What is a prime number?
2. What’s factoring?

4. Day 2
1. Before we start...
1. What is a prime number?
2. What’s factoring?
3. Why do we need factoring?

5. 2. Factoring Review.

6. 2. Factoring Review.
1. What is the first step in any factoring problem?
2. What is the first step to factor -x2 + 8x - 15?
3. On a test, Luis Gonzalez wrote the following, but the
teacher considered it to be incomplete. Explain why
15x2 - 21x - 18 = (5x + 3)(3x - 6)

7. 4. Exercises
Factor each expression completely.
4 2 3
1. x − 9x 2. x − 27
3 2
3. x + 8 4. 4t + 16t + 16
2 2
5. y − 9y + 20 6. 6m + 5m − 4

8. Homework 1.
Baldor, Algebra:
Exercise 106, Problems 9, 18, 27, 36, 47, 54, 73, 83, 91, 98, 109
and 128, p. 171