Hi there I am hoping a pre calc tutor would be willing to help me on problems 3 - 75 in multiples of 3 which is 3, 6, 9, 12, and so on. I truly appreciate as I'm very lost thank you!

Practice Exercises In Exercises 1-4, is the algebraic expression a polynomial? If it is, write the polynomial in standard form. 1. 2x + 3x2 - 5 2. 2x + 3x-1 - 5 2x + 3 4. x2 - x3 + x4 - 5 3. X In Exercises 5-8, find the degree of the polynomial. 5. 3x2 - 5x + 4 6. -4x3 + 7x2 - 11 7. x2 - 4x3 + 9x - 12x4 + 63 8. x2 - 8x3 + 15x4+ 91 In Exercises 9-14, perform the indicated operations. Write the resulting polynomial in standard form and indicate its degree. 9. (-6x3 + 5x2 - 8x + 9) + (17x3 + 2x2 - 4x - 13) 10. (-7x3 + 6x2 - 11x + 13) + (19x3 - 11x2 + 7x - 17) 11. (17x3 - 5x2 + 4x - 3) - (5x3 - 9x2 - 8x + 11) 12. (18x4 - 2x3 - 7x + 8) - (9x4 - 6x3 - 5x + 7) 13. (5x2 - 7x - 8) + (2x2 - 3x + 7) - (x2 - 4x - 3) 14. (8x2 + 7x - 5) - (3x2 - 4x) - (-6x3 - 5x2 + 3) In Exercises 15-82, find each product. 15. (x + 1)(x2 - x + 1) 16. (x + 5)(x2 - 5x + 25) 17. (2x - 3)(x2 - 3x + 5) 18 (2x - 1) (x2 - 4x + 3) 19. ( x + 7) (x + 3 ) 20. (x + 8) (x + 5) 21. (x - 5) (x + 3) 22. (x - 1) (x + 2) 23. (3x + 5)(2x + 1) 24. (7x + 4) (3x + 1) 25. (2x - 3) (5x + 3) 26. (2x - 5) (7x + 2) 27. (5x2 - 4) (3x2 - 7) 28. (7x2 - 2) (3x2 - 5) 29. (8x3 + 3) (x2 - 5) 30. (7x3 + 5) (x2 - 2) 31. ( x + 3)(x - 3) 32. (x + 5)(x - 5) 33. (3x + 2) (3x - 2) 34. (2x + 5) (2x - 5) 35. (5 - 7x) (5 + 7x) 36. (4 - 3x) (4 + 3x) 37. (4x2 + 5x) (4x2 -5x) 38. (3x2 + 4x) (3x2 - 4x) 39. (1 - y5) (1 + y) 40. (2 - y's) (2 + ys) 41. (x + 2)2 42. (x + 5)2 43. (2x + 3) 2 44. (3x + 2)2 45. (x - 3)2 46. (x - 4)2 47. (4x2 - 1)2 48. (5x2 - 3)2 49. (7 - 2x)2 50. (9 - 5x)2 51. (x + 1)3 52. (x + 2)3 53. (2x + 3)3 54. (3x + 4)3 55. (x - 3)3 56. (x - 1)3 57. (3x - 4)3 58. (2x - 3)3 59. (x + 5y) (7x + 3y) 60. (x + 9y) ( 6x + 7y) 61. (x - 3y) (2x + 7y) 62. (3x - y) (2x + 5y) 63. (3xy - 1)(5xy + 2) 64. (7x 2y + 1) (2x2y - 3) 65. (7x + 5y)2 66. (9x + 7y) 67. ( x2y2 - 3)2 68. (x2y2 - 5)- 69. (x - y) (x2 + xy + yz) 70. (x + y) (x2 - xy + 2) 71. (3x + 5y) (3x - 5y) 72. (7x + 3y) (7x - 3y) 73. ( x + y + 3)(x + y- 3) 74. ( x + y + 5)(x + y- 5) 75. (3x + 7 - 5y) (3x + 7 + 5y)