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August 31, 2016
Posted by **nichole** on Monday, May 30, 2011 at 7:58am.

√3 (√3- √21)

- math -
**Jai**, Monday, May 30, 2011 at 8:17amto 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~ :)