Answer:
[tex]2.23\times10^4[/tex]
Step-by-step explanation:
In order to get the answer to this question you need to turn the scientific notations into standard form then subtract the two standard forms.
[tex](2.2\times10^{-4})-(3\times10^2)[/tex]
Turn the notations into standard form:
[tex]2.2\times10^{-4} = .00022[/tex]
[tex]3\times10^2=300[/tex]
[tex].00022-300=22300[/tex]
[tex]=22300[/tex]
Turn into notation form:
[tex]22300 = 2.23\times10^{4}[/tex]
Hope this helps.