Question

me ajudem racionalizar
3/4√5

Answer 1

$\frac{3}{4\sqrt{5}}\times\frac{\sqrt5}{\sqrt5}=\frac{3\sqrt{5}}{4\sqrt{5^2}}=\frac{3\sqrt5}{4\times5}=\boxed{\frac{3\sqrt5}{20}}$

Answer 2

$\frac{3}{4 \sqrt{5} } = \frac{3. \sqrt{5} }{4 \sqrt{5}. \sqrt{5} } = \frac{3. \sqrt{5} }{4.5} = \frac{3. \sqrt{5} }{20}$

Espero ter ajudado.