Question

How do you simplify `sqrt(6.4 times 10^3)`?

Answer 1

The solution is 80. See how I manipulated the values into more manageable figures.

Explanation:

`6.4xx10^3" " =" "64xx10^2`

and `8^2 =64`

So write `sqrt(6.4xx10^3)" as " sqrt(8^2xx10^2)`

And this can be written as`" "sqrt(8^2) xxsqrt(10^2)`

Which is`" " 8xx10=80`