B
bongbong586


a/ $\sqrt{2-\sqrt{3}}$ + $\sqrt{2+\sqrt{3}}$
b/ $\sqrt{8+3\sqrt{7}}$ - $\sqrt{8-3\sqrt{7}}$
c/ $\frac{\sqrt{x^2-10x+25}}{x-5}$
b/ $\sqrt{8+3\sqrt{7}}$ - $\sqrt{8-3\sqrt{7}}$
c/ $\frac{\sqrt{x^2-10x+25}}{x-5}$
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