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Question

The value of 'x' for which (7.6)(7.6) + 7.6x + (0.9)(0.9) is a perfect square is


  1. 18

  2. 180

  3. 1.8

  4. 0.018


Solution

The correct option is C

1.8


(7.6)(7.6)+7.6x+(0.9)(0.9)=(7.6+0.9)2x=2×0.9=1.8

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