Homework Help: math

Posted by nichole on Monday, May 30, 2011 at 7:58am.

use the distributive property to multiply then if possible simplify the resulting expression

√3 (√3- √21)

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

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