Part D: Solve by Quadratic Formula: Part E: Thoughts about solving quad 12. Write the quadratic formula? equations 17. Are you able to solve all quadrat factoring? 13. Where do you find the a, b, and cvalues for the quadratic formula? 18. Are you able to solve all quadrat the quadratic formula? 19. Which method would you try first said to "solve" a quadratic equa 14. What is the Standard form of a quadratic equation and why is it important? 20. If that method does not work whe try next? 15. What is another method we could use to solve a quadratic equation? You may want to reference your textbook! 21. Now that you have "SOLVED" t equation by 4 different methods m the instructions could an instructor h e get the same solutions? Hint: Each space in the answer represents a letter of a word. A. Find the s of equation. 16. Solve the instructor's original quadratic B. Find the equation using the quadratic formula. Show t your steps! of the quadratic equation. 4x- +4x-15=0 C. Find the of t equation