The given expression is :
[tex](7.2\times10^{-6})+(5.44\times10^{-6})[/tex]
The multilpy are same So, we take the 10^(-6) Common
[tex]\begin{gathered} (7.2\times10^{-6})+(5.44\times10^{-6}) \\ (7.2\times10^{-6})+(5.44\times10^{-6})=10^{-6}(7.2+5.44) \\ (7.2\times10^{-6})+(5.44\times10^{-6})=10^{-6}(12.64) \\ (7.2\times10^{-6})+(5.44\times10^{-6})=12.64\times10^{-6} \end{gathered}[/tex]
Answer:
[tex](7.2\times10^{-6})+(5.44\times10^{-6})=12.64\times10^{-6}[/tex]
