Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Group 1 – Factor completely 1. 2. 3. 4. 5. x2 – 121 6x2 – 9x x2 – 4x – 60 2x2 – 7x – 4 6x2 + 5x – 6 Group 2 – Solve by factoring 6. 7. 8. 9. 10. x2 + 3x – 28 = 0 9x2 – 16 = 0 2x2 + 7x + 6 = 0 x2 – 5x – 6 = 0 x2 + 13x = 30 Group 3 – Solve by the square root method 11. 12. 13. 14. 15. 4x2 – 64 = 0 x2 + 25 = 0 3x2 + 4 = -8 (x + 4)2 = 20 2(x – 3)2 = -18 Group 4 – Solve by the quadratic formula/determine the number of solutions Solve by using the quadratic formula 16. 17. 18. x2 + 8x + 5 = 2x + 1 2x2 – 4x + 8 = 0 x2 – 8x – 10 = 0 Determine the number and the type of solutions 19. 20. x2 – 12x + 15 = 0 x2 + x + 3 = 0 Group 5 - Solve by any method 21. 22. 23. 24. 25. x2 – 9x + 8 = 0 x2 + 3x – 18 = 0 6x2 – 9x + 4 = 0 x2 – 9 = 0 (x + 1)2 – 4 = 12 Group 6 – Simplify Complex Numbers 26. 27. 28. (3 + 2i) – (-5 – 6i) (3 + 2i)(-5 – 6i) 3 2i 5 6i 29. 120 30. 3 7 Answers: 1. (x + 11 )(x – 11) 4. (x – 4)(2x + 1) 2. 3x(2x – 3) 5. (3x – 2)(2x+3) 3. (x – 10)(x + 6) 6. x = -7 or 4 9. x = 6 or – 1 7. x = -4/3 or 4/3 10. x = -15 or 2 8. x = -3/2 or -2 11. x = 4 or -4 14. x = -4 ± 2√5 12. x = 5i or -5i 15. x = 3 ± 3i 13. x = 2i or -2i 16. x = -3 ± √5 19. 2 real solutions 17. x = 1 ± i√3 18. x = 4 ± √26 20. 2 imaginary solutions 21. x = 8 or 1 22. x = -3 or 6 24. x = 3 or -3 25. x = 3 or -5 26. 8 + 8i 27. -3 – 28i 29. 2i 30 30. 21 7 23. 9 i 15 12 28. 27 8i 61