1. 19.notebook October 15, 2012
19. Nonlinear Systems, Factoring Exponentials, Sum and Difference of Cubes
1. Solve: x2 + y2 = 9
y ­ x = 1
1

2. 19.notebook October 15, 2012
add picture
2

3. 19.notebook October 15, 2012
2. Solve: x2 + y2 = 9
2x2 ­ y2 = ­6
3

4. 19.notebook October 15, 2012
add picture
4

5. 19.notebook October 15, 2012
3. Solve xy = ­4
y = ­x ­ 2
5

6. 19.notebook October 15, 2012
add picture
6