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1. x2 + x - 20 এর উৎপাদকে বিশ্লেষণ কত হবে?

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

Answer: Option B

Explanation:

x²-x+20

=x²+5x-4x-20

=x(x+5)-4(x+5)

=(x+5)(x-4)

(ans)


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