Posted by nichole on .
use the distributive property to multiply then if possible simplify the resulting expression
√3 (√3 √21)

math 
Jai,
to multiply, just multiply the radicands (terms inside the radical sign):
sqrt(3*3)  sqrt(3*21)
sqrt(9)  sqrt((3^2)*7)
3  3*sqrt(7)
hope this helps~ :)