3331 . a + 1/a = 2 হলে a/(a2 + a - 1) এর মান কত?
- A. 4
- B. 3
- C. 2
- D. 1
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3333 . x = -5 হলে x3 + 1 এর মান কত?
- A. -124
- B. 126
- C. 24
- D. 25
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3334 . a - [2b {3c - (a - 2b + 3c)}] = কত?
- B. a + b + c
- C. a - b
- D. 2a
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3335 . a - 1/a = 4 হলে a3 - 1/a3 = ?
- A. 75
- B. 76
- C. 71
- D. 72
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3336 . x3 + y3 + 3xy(x + y)(x + y)2 - 4xy ÷ (x - y)2 + 4xyx3 - y3 - 3xy(x -y)
- A. x2 + y2
- B. x2 - y2
- C. x + y
- D. x + y2
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3337 . a + b + c = 0 হলে a3 + b3 + c3 এর মান কত?
- A. abc
- B. 3abc
- C. 6abc
- D. 9abc
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3338 . যদি a3 - b3 = 513 এবং a-b = 3 হয় তবে ab এর মান কত?
- A. 54
- B. 35
- C. 45
- D. 55
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সমাজসেবা অধিদপ্তর নিয়োগ পরীক্ষা-২০১৮ | ফিল্ড সুপারভাইজার | ১৪.০৯.২০১৮
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3339 . a +b = 5 এবং ab = 6 হলে a3 + b3 এর মান কত?
- A. 30
- B. 35
- C. 40
- D. 45
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3340 . a + 1/a = 3 হলে a3 + 1/a3 = ?
- A. 16
- B. 18
- C. 20
- D. 24
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3341 . a - 1a = 2 হলে a3 - 1a3 এর মান কত?
- A. 12
- B. 14
- C. 16
- D. 18
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3342 . (x - 1)(x2 + x + 1)- এর গুণফল কত হবে?
- A. x3 - 3
- B. (x - 1)3
- C. x3 - 1
- D. x3 + 4x2 +1
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3343 . (a - 2b)3- এর মান কত?
- A. a3 - 8b3 - 6a2b + 12ab2
- B. a3 + 8b3 + 6a2b + 12ab2
- C. a3 + 8b3 - 12ab
- D. a3 -8b3 - 12a2b - 6ab3
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3344 . a3 + b3 = কত?
- A. a3 + 3a2b + 3ab2 + b3
- B. (a + b)3 + 3ab(a + b)
- C. (a + b)3 - 3ab(a + b)
- D. (a + b)(a2 + ab + b2)
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3345 . x + 1x = 4 হলে x4 + 1x4 এর মান কত?
- A. 149
- B. 194
- C. 119
- D. 147
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