Posted by mo on Saturday, December 18, 2010 at 11:45pm.
find domain of f(x) = 15/sqrt(x+6)

precalc  TutorCat, Sunday, December 19, 2010 at 12:44am
hint: what values of x can be?
since you can't have negative numbers under a square root, sqrt(x+6)>or=0
find x

algebra  Alex, Wednesday, March 2, 2011 at 8:14pm
simplify:
sq rt of 15/5 * sq rt of 20
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