ka hasil dari ini brp ya, makasih

[tex] \frac{15}{ \sqrt{5} + \sqrt{2} } \\ = \frac{15}{ \sqrt{5} + \sqrt{2} } \times \frac{ \sqrt{5} - \sqrt{2} }{ \sqrt{5} - \sqrt{2} } \\ = \frac{15( \sqrt{5} - \sqrt{2}) }{ ({ \sqrt{5} })^{2} - ( { \sqrt{2}) }^{2} } \\ = \frac{15 (\sqrt{5} - \sqrt{2}) }{5 - 2} \\ = \frac{15( \sqrt{5} - \sqrt{2}) }{3} \\ = 5( \sqrt{5} - \sqrt{2} ) \\ = 5 \sqrt{5} - 5 \sqrt{2} [/tex]
Semoga dapat dipahami