math

Express the answer using scientific notation; retain all nonzero decimal places. (1.9 • 104) • (8.4 • 105)

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  1. (1.9*104)*(8.4*105)=
    1.09*1.04*10^2*8.4*1.05*10^2=
    1.09*1.04*8.4*1.05*10^4=
    17.42832*10^4=
    1.742832*10*10^4=
    1.742832*10^5

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  2. what are the answers?

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