286 . (x + 1)/2 - (x - 2)/3 - (x - 3)/5 = 2 সমীকরণে x এর মান কত?
- A. - 9
- B. 18
- C. - 7
- D. 6
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287 . (2a + 5b + 3c)2 + (5b + 3c - a)2 - 2 (2a + 5b + 3c) (5b + 3c - a) এর সরলকৃত রূপ কোনটি?
- A. 4ab
- B. 9a2
- C. 6b2
- D. 4a2
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288 . (2x + 3y)2 + 2 (2x + 3y) (2x - 3y) + (2x - 3y)2 এর সরলকৃত রূপ কোনটি?
- A. 4y2
- B. 4x2
- C. 16x2
- D. 4xy
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289 . (a + b)2 - 2(a + b) (a - b) + (a - b)2 এর সরলকৃত রাশি কোনটি?
- A. 4ab
- B. 16a2b2
- C. 4b2
- D. 4
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290 . (ab + 2a + 3b)/2ab = কত?
- A. 3/2ab
- B. 3/2a
- C. 1/2ab
- D. 1/2 + 1/b + 3/2a
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291 . {a - b + b (a - b)}/(a - b) = কত?
- A. a/(a + b)
- B. 1 + b
- C. 1/(a + b)
- D. (a - b)/(a + b)
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292 . x + 1/y = কত?
- A. xy/(x + y)
- B. (xy + 1)/y
- C. 1/y
- D. x/y
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293 . x/(a - b) - x/(a + b) = কত?
- B. x/(a - b)
- C. x/(a + b)
- D. 2bx/(a² - b²)
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294 . a - b + (b - a) = কত?
- B. 2b
- C. 2a
- D. a + b
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295 . c/b + a/b এর সরলকৃত রাশি কোনটি?
- A. ca/(b + a)
- B. (c + a)/b
- C. ac/b
- D. b/(c + a)
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296 . a/c + b/c এর সরলকৃত রাশি কোনটি?
- A. c/(a + b)
- B. ab/(a + b)
- C. a/b + c
- D. (a + b)/c
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297 . a/(a + b) + b/(a - b) = কত?
- A. a² + b²
- B. (a² + b²)/(a² - b²)
- C. (a - b)/(a + b)
- D. a² - b²
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298 . (b + c)/a - 2c/a = কত?
- A. (b² - c²)/a²
- B. (b + c)/a
- C. (b - c)/a
- D. (a - b)/a
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299 . (a + b)/(a - b) - (b + 2a)/(b - a) = কত?
- A. (a² - b²)/(a + b)
- B. (a - b)/(a + b)
- C. (a + b)/(a - b)
- D. (3a + 2b)/(a - b)
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300 . (b - c)/b + (b + c)/b = কত?
- A. 2bc/b
- B. 2b/c
- C. - 2c/b
- D. 2c/b
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