How do you simplify -3sqrt5*sqrt20?

2 Answers
Mar 28, 2018

-30

Explanation:

-3sqrt5*sqrt(4*5)
-3sqrt5*2sqrt5
-6*5
-30

Mar 28, 2018

Combine terms in the radical to find the simplified expression is -30

Explanation:

We can multiply the radicals directly, since they're the same root:

-3sqrt(5)*sqrt(20)=-3sqrt(5*20)

Once we carry out the multiplication under the radical, we can then simplify:

rArr -3sqrt(100)=-3*10

color(red)(rArr -30)