1. Some examples of perfect squares… because 62 = 36 because 112 = 121 x2 + 10 x + 25 because (x + 5)2 = x2 + 10x + 25 x2 + 10 x + 25 is a perfect square trinomial

2. Solve

3. solve

4. solve

5. Solve or Example 4-1a

6. Solve or Example 4-2a

7. Find the value of c that makes a perfect square. Then write the trinomial as a perfect square. c = 64 Example 4-3a

8. Find the value of c that makes a perfect square. Then write the trinomial as a perfect square. 3 9 3 9 (x + 3)2 c = 9 Example 4-3a

9. Solve by completing the square. = 2 22 = 4 x + 2 = 4 or x + 2 = -4 x = 2 or x = -6 Example 4-4a

10. Solve by completing the square. -

11. Solve by completing the square. x2 + 5x = 6 x2 + 5x + = 6 + (x + )2 = x + = x + = or x + = x = 1 or x = -6 49 7 -7 7 Example 4-4b

12. Solve by completing the square. - Example 4-6a