\[\frac{7\sqrt{3}}{(\sqrt{10}+\sqrt{3})}-\frac{2\sqrt{5}}{(\sqrt{6}+\sqrt{5})}-\frac{3\sqrt{2}}{(\sqrt{15}+3\sqrt{2})}=\_\_\_\_\_.\]

\[\frac{7\sqrt{3}}{(\sqrt{10}+\sqrt{3})}-\frac{2\sqrt{5}}{(\sqrt{6}+\s

1.	\[\frac{7\sqrt{3}}{(\sqrt{10}+\sqrt{3})}-\frac{2\sqrt{5}}{(\sqrt{6}+\sqrt{5})}-\frac{3\sqrt{2}}{(\sqrt{15}+3\sqrt{2})}=\_\_\_\_\_.\]
A.	1
B.	2
C.	\[\frac{1}{2}\]
D.	3
Answer» B. 2

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\[\frac{7\sqrt{3}}{(\sqrt{10}+\sqrt{3})}-\frac{2\sqrt{5}}{(\sqrt{6}+\sqrt{5})}-\frac{3\sqrt{2}}{(\sqrt{15}+3\sqrt{2})}=\_\_\_\_\_.\]

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