Question

simplificar a raiz quadrada de 80+45 raiz quadrada de 20

Answer 1

Raiz quadrada de 80+45 e a raiz quadrada de 20?

Answer 2

$\sqrt{80}+45\sqrt{20}=\sqrt{2^4\times5}+45\sqrt{2^2\times5}=2^2\sqrt{5}+45\times2\sqrt{5}=$ $4\sqrt5+90\sqrt5=\boxed{94\sqrt5}$