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September 21, 2014

Homework Help: check my precalc

Posted by rebekah on Monday, October 1, 2012 at 9:53pm.

#1. solve x^2-1<0 I got (-1,1)

#2 x(x+1) >20
I got (-infinity, -4) U (5,infinity)

#3
what is the domain of this function? f(x)= squre root of (x-3x^2)
i got [-1/3,0]

thanks!!!

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