5566 . 27x3 - 54x2 + 36x - 8 = কত? যখন x = - 2
- A. - 581
- B. - 512
- C. 512
- D. 472
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5567 . ক২ = ১৬, খ২ = ২৫ হলে কখ- এর মান হবে--
- A. ৩৫
- B. ২০
- C. ৩০
- D. ২৫
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5568 . x + 1/x = 2 হলে, x5 + 1/x5 = কত?
- A. 2
- B. 4
- C. 27
- D. 64
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5569 . 2x + 2/x = 3 হলে, x3 + 1/x3 +2-এর মান কত?
- A. 5/8
- B. 7/8
- C. 9/8
- D. 9/8
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5570 . x + y = 8 এবং x - y = 2 হলে, 2x2 + 2y2 = কত?
- A. 64
- B. 72
- C. 70
- D. 68
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5571 . a + b = 3 এবং ab = 3 হলে, a3 + b3 এর মান কত?
- B. 54
- C. 9
- D. 45
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5572 . a + b = 9p, ab = 18p2 হলে, (a - b) = কত?
- A. 4p
- B. 6p
- C. 3p
- D. 5p
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5573 . a2 + 1/a2 = 51 হলে, a - 1/a এর মান কত?
- A. ±4
- B. ±6
- C. ±8
- D. ±7
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5574 . a + b = c হলে, a3 + b3 + 3abc = কত?
- B. c3
- C. b3
- D. a3
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5575 . 9x2 + 24x এর সাথে কত যোগ করলে যোগফল পূর্ণবর্গ হবে?
- A. 9
- B. 64
- C. 49
- D. 16
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5576 . x = √3 - 1/x হলে, x3 + 1/x3 এর মান কত?
- B. √3
- C. 3
- D. 1
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5577 . যদি a - 1/a= 2, তবে a4 + (1/a)4 = কত?
- A. 45
- B. 34
- C. 27
- D. 24
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5578 . a - 6/a = 1 হলে, 6/(a2 - a - 1) এর মান কত?
- A. 6/5
- B. 6/8
- C. 7/4
- D. 3/8
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5579 . (x2 + 1)2 = 3x2 হলে, x3 + 1/x3 এর মান কত?
- A. -√3
- C. 3√3
- D. √3
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5580 . যদি a + b = √7 এবং b = a - √3 হয়, তবে ab = কত?
- A. 2√10
- B. 1
- C. 2
- D. √21
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