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Question

Find the value of x:1+xx2+24=x+1


  1. 1

  2. 3

  3. 4

  4. 5

  5. 2


Solution

The correct option is D

5


Squaring both sides, we get
1+xx2+24=(x+1)21+xx2+24=x2+1+2xxx2+24=x2+2x
Again squaring both sides, we get
(x2+24)2=(x+2)2x2+24=x2+4+4x20=4x204=xx=5

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