rasionalkan 10 per akar 13 + akar 8

Rationalizing.

[tex]\displaystyle \frac{10}{\sqrt{13}+\sqrt{8}}\\ = \frac{10}{\sqrt{13}+\sqrt{8}}~ \frac{\sqrt{13}-\sqrt{8}}{\sqrt{13}-\sqrt{8}}\\ =\frac{10(\sqrt{13}-\sqrt{8})}{5}\\=2\sqrt{13}-4\sqrt{2}[/tex]