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1. 3^(x-n )- 5^(x-n) = 0 হলে x = কত?

  • A. n
  • B. n
  • C. n
  • D. n

Answer: Option A

Explanation:

-x^2+ 3x + 2x -6 = 0

বা, -x^2 + 5x -6=0

বা, -(x^2-5x+6)=0

বা, x^2-3x-2x+6=0

বা, x(x-3)-2(x-3)=0

বা,(x-3)(x-2)=0

হয়, x-3=0 অথবা (x-2)=0

x=3 অথবা x=2


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