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# Quadratic Formula and Applications

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1. Quadratic Formula and Applications

2. The Quadratic Formula The following nine slides contain videos with music to help you memorize the quadratic formula (a necessity of life). Internet connection is required to view them. Click here to bypass the video slides.

3. Video 1A (4:01)

4. Video 1B (3:53)

5. Video 2 (2:46)

6. Video 3 (0:32)

7. Video 4 (2:44)

8. Video 5 (0:25)

9. Rap 1 (2:13)

10. Rap 2 (3:19)

11. Rap 3 (2:52)

12. Does the equation yield two unique real solutions? • If yes to part (a), find the two solutions.

13. Try these four:

14. From Factoring Day 3: Now becomes…

15. CALCULATOR REQUIRED A courtyard measuring 12 feet by 16 feet needs a pedestrian walkway all around it. This walkway would increase the total area to 285 square feet. What will be the width of the walkway? x 16 x x 12 x 1.5 or 1.5 feet

16. CALCULATOR REQUIRED You are to take a square piece of cardboard, cut three-inch squares from each corner, and fold it into a box which has a volume of 71 cubic inches. What are the dimensions of the smallest square piece of cardboard which can be purchased to create such a box? Assume square pieces of cardboard are sold in whole inch dimensions only. 3 x – 6 3 3 x – 6 3 11” x 11”

17. CALCULATOR REQUIRED Find all possible sets of three consecutive integers such that four times the sum of all three is two times the product of the larger two. -1, 0, 1 4, 5, 6