Answer :
Given,
[tex](1.3\times10^{-4})(2.0\times10^{-6})[/tex]On simplifying the above equation,
[tex]\begin{gathered} 1.3\times2.0\times10^{-4+(-6)} \\ =2.6\times10^{-4-6} \\ =2.6\times10^{-10} \end{gathered}[/tex]Thus the simplification of (1.3 x 10⁻⁴)(2.0 x 10⁻⁶) is 2.6×10⁻¹⁰