Evaluate : \(\dfrac{(2.39)^2 - (1.61)^2}{2.39 - 1.61}\)
Answer: B
\(\dfrac{2.39^2 - 1.61^2}{2.39 - 1.61} \\~\\= \dfrac{(2.39 + 1.61)(2.39 - 1.61)}{(2.39 - 1.61)}\\~\\ = 2.39 + 1.61 \\~\\= 4\)