Question

racionalize o denominador

Answer 1

$\frac{3}{ \sqrt{7} } \\ \frac{3}{ \sqrt{7} } \: . \: \frac{ \sqrt{7} }{ \sqrt{7} } \\ \frac{3 \sqrt{7} }{ \sqrt{7} \sqrt{7} } \\ \boxed{\boxed{\boxed{ \frac{3 \sqrt{7} }{7} }}}$

atte. yrz

Answer 2

Explicação passo-a-passo:

$\frac{3}{ \sqrt{7} } = \frac{3. \sqrt{7} }{ \sqrt{7} . \sqrt{7} } = \frac{3 \sqrt{7} }{( \sqrt{7}) {}^{2} } = \frac{3 \sqrt{7} }{7}$