Question

15 Points for grade 7 Math！！！！！！！！！！！！！！！！！！！！！！1

(4.5*10^(400))(2.0*10^(300))
Simplified and why?

Answer 1

`8\cdot 10^(700)`

Explanation:

Since multiplication is commutative, you can rearrange this expression to simplify it.

`(4.5\cdot10^(400))(2.0\cdot10^(300)) = (4.5\cdot2.0)\cdot(10^(400)\cdot10^(300))=\boxed{8\cdot 10^(700)}`. Hope this helps, and comment below with more questions if this didn't make sense!