(√3 + √7) per (√7 + 2√3)

[tex] \frac{ \sqrt{3} + \sqrt{7} }{ \sqrt{7} + 2 \sqrt{3} } \times \frac{ \sqrt{7} - 2 \sqrt{3} }{ \sqrt{7} - 2 \sqrt{3} } = \\ \frac{ \sqrt{21} - 2 \sqrt{21} }{7 - 4 \times 3} = \\ \frac{ \sqrt{21} - 2 \sqrt{21} }{5} [/tex]
maaf ya klo salah