Question

How do you multiply `(3\times 10^ { 8} ) ( 2.3\times 10^ { 7} )`?

Answer 1

`6.9 xx 10^15`

Explanation:

`(3 xx 10^8) (2.3 xx 10^7)`

`= 3 xx 10^8 xx 2.3 xx 10^7`

Note: `n^a * n^b = n^(a+b)`

`= 6.9 xx 10^(8+7)`

`= 6.9 xx 10^15`