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MathNet 2018-part-05 — 181 problems (EN–VI) Question 145

Math Olympiad Vault · MathNet 2018-part-05 — 181 problems (EN–VI)

Question 145

What do we obtain after rationalizing the expression $\frac{4+2 \sqrt{6}}{(1+\sqrt{2})+\sqrt{3}}$?
(A) $1-\sqrt{2}-\sqrt{3}$
(B) $1-\sqrt{2}+\sqrt{3}$
(C) $1+\sqrt{2}+\sqrt{3}$
(D) $-1+\sqrt{2}+\sqrt{3}$
(E) $-1+\sqrt{2}-\sqrt{3}$