Find the mean proportion between $(6 + \sqrt{8})$ and $(3-\sqrt{2})$.
Answer & explanation
Correct answer: option 2
Mean proportion of A and B = \(\sqrt {A\;\times\;B }\)
Mean proportion = \(\sqrt {(6+\sqrt{8})\; \times\; (3-\sqrt{2}) }\) = \(\sqrt {2(3+\sqrt{2})\; \times\; (3-\sqrt{2}) }\)
= \(\sqrt {2(9\;-\;2) }\) = \(\sqrt {14 }\)