Question

calcule

(C) √1/9
(d) √81/25



​

Answer 1

→ Cálculo :

C)

${ \sqrt{ \frac{1}{9} }} = \frac{ \sqrt{1} }{ \sqrt{9} } = \frac{ \sqrt{1 {}^{2} } }{ \sqrt{3 {}^{2} }} = { \boxed{ \: \red{\frac{1}{3} \: }}}$

D)

$\sqrt{ \frac{81}{25} } = \frac{ \sqrt{81} }{ \sqrt{25} } = \frac{ \sqrt{9 {}^{2} } }{ \sqrt{5 {}^{2} } } = { \boxed{ \red{ \: \frac{9}{5} \: }}}$