(3,4*10^-2)(5*10^-2)
(3.4·10⁻²)·(5·10⁻²)= (3,4·5)·(10⁻²·10⁻²)=17·10⁻²⁺⁽⁻²⁾=17·10⁻⁴ = 1,7·10⁻³= =0,0017
= ( 3,4•5 )•( 10^-2•10^-2 ) = 17 • 10^-4 = 0,0017