Question

16 x 10^-4 x 8 x 10^5 x 10^-3 \ 64 x 10^5 x 10^-6

Answer 1

Raianne,
Vamos passo a passo

Aplicando propriedades operatórias de potencias

                 $\frac{16x 10^{-4}x8x10^5x 10^{-3} }{64x10^5x 10^{-6} } \\ \\ = \frac{16x8x 10^{-4+5-3} }{64x 10^{5-6} } \\ \\ = \frac{16x4x2}{64} . \frac{ 10^{-2} }{ 10^{-1} } \\ \\ =2. 10^{-2+1} \\ \\ =2x 10^{-1} \\ \\ = \frac{2}{10}$

                           $= \frac{1}{5}$  RESULTADO FINAL

Answer 2

$\frac{16.10^{-4}.8.10^5.10^-^3}{64.10^5.10^-^6} = \\ \\ \frac{16.8.10^{-4+5-3}}{64.10^{5-6}} = \\ \\ \frac{128.10^-^2}{64.10^-^1} = \\ \\ 128\div64.10^{-2-(-1)}= \\ \\ 2.10^{-2+1}= \\ \\ 2.10^-^1= \\ \\ \frac{2}{10} =0,2 \\ \\ou \\ \\ \frac{2}{10} = \frac{1}{5}$