Simplify 0.5+0.20.5−0.2\frac{\sqrt{0.5} + \sqrt{0.2}}{\sqrt{0.5} - \sqrt{0.2}}0.5−0.20.5+0.2 by rationalizing.
7+2103\frac{7 + 2\sqrt{10}}{3}37+210
7+103\frac{7 + \sqrt{10}}{3}37+10
5+2103\frac{5 + 2\sqrt{10}}{3}35+210
2+103\frac{2 + \sqrt{10}}{3}32+10