1 / 9

4.8 Do Now: practice of 4.7

4.8 Do Now: practice of 4.7. The area of a rectangle is 50. If the width is x and the length is x + 10. Solve for x by completing the square. Algebra II. 4.8: Quadratic Formula HW: p.296 (16, 20, 32, 34) Test 4.5, 4.7, 4.8, word problems: Wednesday, Nov. 5 th. Quadratic Formula.

cconlon
Download Presentation

4.8 Do Now: practice of 4.7

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 4.8 Do Now: practice of 4.7 The area of a rectangle is 50. If the width is x and the length is x + 10. Solve for x by completing the square.

  2. Algebra II 4.8: Quadratic Formula HW: p.296 (16, 20, 32, 34) Test 4.5, 4.7, 4.8, word problems: Wednesday, Nov. 5th

  3. Quadratic Formula • The quadratic formula is used to solve any quadratic equation. • Quadratic Formula: If ax2 + bx + c = 0, then

  4. Discriminant • The discriminant = b2 – 4ac • The value of the discriminant tells you how many solutions the quadratic equation has. • 0  1 real solution. • positive number  2 real solutions. • negative number  2 imaginary solutions.

  5. Find the discriminant and determine the number of solutions. 1.) x2 – 8x + 16 = 0 2.) 5x2 + 20x = -21

  6. Use the Quadratic Formula to find the solutions to the equation. 1.) x2 – 4x – 5 = 0

  7. Use the Quadratic Formula to find the solutions to the equation. 2.) 3 – 8v – 5v2 = 2v

  8. 4.8: Use the Quadratic Formula to find the solutions to the equation. 3.) 4x2 + 3 = x2 – 7x

  9. 4.8: Use the Quadratic Formula to find the solutions to the equation. 4.) 4x2 + 3x – 12 = 3 – 3x

More Related