1. 7.3 Quadratic Techniques to Solve Polynomial Equations

6. Ex. 1: Solve x 4 – 13x 2 + 36 = 0 The solutions or roots are -3, 3, -2, and 2.

7. The graph of x 4 – 13x 2 + 36 = 0 looks like: The graph of y = x 4 – 13x 2 + 36 crosses the x-axis 4 times. There will be 4 real solutions.

9. Ex. 2: Solve

10. Ex. 3: Solve

11. Ex. 4: Solve

12. Ex. 4: Solve There is no real number x such that is = -1. The only solution would be 64.

14. Ex. 5: Solve

15. Thank you Mrs. Spitz for the wonderful ppt.