Question

What is the product written in scientific notation?
(2.1 x 10-2)(3.2 x 10-4)

Answer 1

is it supposed to be \(\Large{(2.1 * 10^2)(3.2*10^4)}\)?

Answer 2

the options are 6.72 x 10^8
6.72 x 10-6
5.3 x 10^2
5.3 x 10-6
I think it is 6.72 x 10-6