Question

2.1x10 to the -3 power x 2x10 to the second power

Answer 1

`4.2*10^(-1)`

Explanation:

We want to simplify:

`2.1*10^(-3)* 2*10^2`

We rewrite to get:

`2.1*2*10^2*10^(-3)*10^2`

We now apply the laws of indices

`4.2*10^(-3+2)`

We simplify to get
`4.2*10^(-1)`

We leave our final answer is scientific form.

The final answer is therefore:

`4.2*10^(-1)`