Question

How do you simplify `\sqrt { 640}`?

Answer 1

See a solution process below:

Explanation:

We can use this rule for multiplying radicals to simplify this expression:

`sqrt(color(red)(a) * color(blue)(b)) = sqrt(color(red)(a)) * sqrt(color(blue)(b))`

`sqrt(640) => sqrt(color(red)(64) * color(blue)(10)) => sqrt(color(red)(64)) * sqrt(color(blue)(10)) => 8sqrt(10)`