Question

x= 8,1 . 10 elevado a 23 e y= 4 . 10 elevado a 15, calcule x . y e x : y

Answer 1

$x.y=8,1.10^{23} .4.10^{15}= 32,4.10^{38}=324.10^{37}$

$x:y=(8,1.10^{23}):(4.10^{15})=2,025.10^{8}=2025.10^{5}$