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

Answer 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

Answer 2

what are the answers?