The expression as a number in scientific notation is 6.4 x 104.
Given,
8*10^2, 3.2*10^5, 10^3
Solution:
(8*10^2) * (3.2*10^5)/4 * 10^3
= 800 * 320000/4000
= 64000
= 6.4 * 10^4
Therefore, the scientific notation is 6.4 x 104.
To learn more about scientific notation, refer
https://brainly.com/question/16236436
#SPJ4