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1. x2 − 9x + 20  এর উৎপাদক সমূহ কোনটি ?

  • A. (x+5) (x+4)
  • B. (x+5) (x+4)
  • C. (x+5) (x+4)
  • D. (x+5) (x+4)

Answer: Option B

Explanation:

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