Question

Racionalize os denominadores:

Answer 1

Resposta:

$\frac{2}{ \sqrt{2} } \times \frac{ \sqrt{2} }{ \sqrt{2} } = \frac{2 \sqrt{2} }{ \sqrt{4{} } { } } = \frac{2 \sqrt{2} }{2} = \sqrt{2} \\ \\ > \frac{1 \ }{ \sqrt{3} } \times \frac{ \sqrt{3} }{ \sqrt{3} } = \frac{ \sqrt{3} }{ \sqrt{9} } = \frac{ \sqrt{3} }{3} \\ \\ > \frac{7}{ \sqrt{7} } \times \frac{ \sqrt{7} }{ \sqrt{7} } = \frac{7 \sqrt{7} }{ \sqrt{49} } = \frac{7 \sqrt{7} }{7} = \sqrt{7 } \\ \\ > \frac{2}{ \sqrt{5} } \times \frac{ \sqrt{5} }{ \sqrt{5} } = \frac{2 \sqrt{5} }{ \sqrt{25} } = \frac{2 \sqrt{5} }{5}$