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1. x2-4x+3=0

  • A. -1
  • B. -1
  • C. -1
  • D. -1

Answer: Option C

Explanation:

দেওয়া আছে, x2-4x+3=0x2-3x-x+3=0xx-3-1x-3=0x-3 x-1=0অতএব, x-3=0x=3 এবংx-1=0x=1এখন x=3 হলে x-22=3-22=12=1আবার x=1 হলে x-22=1-22=-12=1

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