Question

Raiz quadrada de 81 elevada a 4

Answer 1

(√81)^4 = (9)^4 = 6561

*-*-*-*-*-*-*-*-*-*-*-*
24/02/2016 
Sepauto - SSRC
*-*-*-*-*-*-*-*-*-*-*-* 

Answer 2

olá, 

$\sqrt{ 81^{4} } = \\ \sqrt{ 81^{2}* 81^{2} } = \\ 81*81 = 6561$