Question

15/2 raiz de 10 racionalizaçao

Answer 1

$\frac{15}{2 \sqrt{10} }= \frac{15}{2 \sqrt{10} }. \frac{ \sqrt{10}}{ \sqrt{10}}= \frac{15 \sqrt{10}}{2( \sqrt{10})^2}= \frac{15 \sqrt{10}}{2\sqrt{10^2}}= \frac{15 \sqrt{10}}{2.10}= \frac{3 \sqrt{10}}{2.2}=\frac{3 \sqrt{10}}{4}$