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Question

If a and b are two consecutive integers such that a>b and product of the two integers is c. Then (a+b)2 =


  1. None of these

  2. 1-4c

  3. 1+4c

  4. 1-2c

  5. 1+2c


Solution

The correct option is C

1+4c


(a+b)2 = (a-b)2 + 4ab = 1 + 4c (since both are consecutive)

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