Question

1 / √7 - 3√2
Racionalização

Answer 1

$\frac{1}{ \sqrt{7} }-3 \sqrt{2} \\ \\ \frac{1-3\sqrt{2.7 } }{ \sqrt{7} } \\ \\ \frac{1-3\sqrt{2.7 } }{ \sqrt{7} } . \frac{ \sqrt{7} } \sqrt{7} } \\ \\ \frac{ \sqrt{7}-3 \sqrt{2.7.7} }{7} \\ \\ \frac{ \sqrt{7}-21 \sqrt{2} }{7}$