Question

AYUDA POR FAVOR!!!!!

Answer 1

Calcular el Valor de E 

$E= \left[\left( \dfrac{1}{5}\right)^{-2} +2\left( \dfrac{3}{2}\right)^{-2} +\left( \dfrac{1}{3}\right)^{2}+\left( \dfrac{1}{7}\right)^{-2}+\left( \dfrac{1}{6}\right)^{-1}\right] ^{ \frac{1}{2}} \\ \\ \\ E= \left[\left( \dfrac{5}{1}\right)^{2} +2\left( \dfrac{2}{3}\right)^{2} +\left( \dfrac{1}{3}\right)^{2}+\left( \dfrac{7}{1}\right)^{2}+\left( \dfrac{6}{1}\right)^{1}\right] ^{ \frac{1}{2}}$

$E= \left[\left( 25\right) +2\left( \dfrac{4}{9}\right) +\left( \dfrac{1}{9}\right)}+\left(49\right)+\left(6)\right] ^{ \frac{1}{2}}$

$E= \left[ 25 +\left( \dfrac{8}{9}\right) +\left( \dfrac{1}{9}\right)}+\left(49\right)+\left(6)\right] ^{ \frac{1}{2}}$

$E= ( 25+1+49+6)^{ \frac{1}{2}} \\ \\ \\ E= ( 81)^{ \frac{1}{2}} \\ \\ \\ E= \pm \sqrt{81} \\ \\ E = 9 \qquad E = - 9$

E= 9 ....Opción C) 

Espero que te sirva, salu2!!!!