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      Question

      The vale of the expression (2.252 –

      1.252) / (2.25 – 1.25) is
      A 1 Correct Answer Incorrect Answer
      B 2.5 Correct Answer Incorrect Answer
      C 3.5 Correct Answer Incorrect Answer
      D 3 Correct Answer Incorrect Answer

      Solution

      (2.252 – 1.252) / (2.25 – 1.25) is Let a=2.25 and b =1.25 So now use this formula – a2 -b2 =(a-b) (a+b). ATQ- = a2 -b2 / a-b =(a-b) (a+b) / (a-b) =a+b =2.25+1.25 =3.5

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