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Q:

If x4+2x3+ax2+bx+9 is a perfect square where a and b are positive real numbers, then the value of a and b 

  • 1
    a = 5, b = 6
  • 2
    a = 6, b = 7
  • 3
    a = 7, b = 7
  • 4
    a = 7, b = 8
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Answer : 2. "a = 6, b = 7"

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