Given:
[tex]\begin{gathered} \text{The distance of star A is 8}\times10^4\text{ light years} \\ \text{The distance of star B is 2}\times10^{6^{}}\text{ light years} \end{gathered}[/tex]
To choose which start is farther away,
[tex]\begin{gathered} \text{Star B -Star A=}(2\times10^6)-(8\times10^4) \\ =10^4(2\times10^2-8) \\ =192\times10^4 \end{gathered}[/tex][tex]\text{Star B is 192}\times10^4\text{ light years times far away from star A.}[/tex]
