Question

a2+3a2b+3ab2+b3 if a=-2 b=3

Answer 1

1. Correct option is D)
2. We solve the given expression a
3. 3
4. +3a
5. 2
6. b+3ab
7. 2
8. +b
9. 3
10. −8 as shown below:
12. a
13. 3
14. +3a
15. 2
16. b+3ab
17. 2
18. +b
19. 3
20. −8
21. =(a+b)
22. 3
23. −(2)
24. 3
25. (∵(x+y)
26. 3
27. =x
28. 3
29. +y
30. 3
31. +3x
32. 2
33. y+3xy
34. 2
35. )
36. =(a+b−2)[(a+b)
37. 2
38. +2
39. 2
40. +2(a+b)](∵x
41. 3
42. −y
43. 3
44. =(x−y)(x
45. 2
46. +y
47. 2
48. +xy))
49. =(a+b−2)(a
50. 2
51. +b
52. 2
53. +2ab+4+2a+2b)(∵(x+y)
54. 2
55. =x
56. 2
57. +y
58. 2
59. +xy)
61. Hence, a
62. 3
63. +3a
64. 2
65. b+3ab
66. 2
67. +b
68. 3
69. −8=(a+b−2)(a
70. 2
71. +b
72. 2
73. +2ab+4+2a+2b)

Answer 2

Answer: -67

Step-by-step explanation:

a=-2, b=3

= -2*2+3*-2*2*3+3*-2*3*2+3*3

= -4+-36+-36+9

= -67