Answers

  • qais
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2016-03-15T11:59:13+05:30
[(3.49²) - (2.51²)]/(3.49 - 2.51)   [∵ (a²-b²) = (a+b)(a-b)  ]
⇒[(3.49 + 2.51)(3.49 - 2.51)]/(3.49 - 2.51)
(3.49 + 2.51) = 6
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