Question

qual é a raiz quadrada
25/36

Answer 1

Bom dia

$\sqrt{ \frac{25}{36} } = \frac{ \sqrt{25} }{ \sqrt{36} } = \frac{5}{6}$

Answer 2

$\pm\sqrt{ \dfrac{25}{36} }= \dfrac{\pm \sqrt{25}}{\pm \sqrt{36}}= \pm \dfrac{5}{6}$

A raiz quadrada tem dois resultados, então

$\boxed{ \pm \sqrt{ \dfrac{25}{36} }= \dfrac{5}{6} }\qquad i\qquad \boxed{ \pm \sqrt{ \dfrac{25}{36} }= - \dfrac{5}{6} }$

$(+ \frac{5}{6} )^2= \frac{5*5}{6*6}= \frac{25}{36} \\ \\ \\ (- \frac{5}{6} )^2= - \frac{5}{6}*-\frac{5}{6} = \frac{25}{36}$