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Evaluate : \(\dfrac{(2.39)^2 - (1.61)^2}{2.39 - 1.61}\)

  • A.2
  • B.4
  • C.6
  • D.8

Answer: B

\(\dfrac{2.39^2 - 1.61^2}{2.39 - 1.61} \\~\\= \dfrac{(2.39 + 1.61)(2.39 - 1.61)}{(2.39 - 1.61)}\\~\\ = 2.39 + 1.61 \\~\\= 4\)

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