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Mathematics 18 Online
OpenStudy (anonymous):

I'm having trouble with the algebra of this when I try to find the domain sqrt( ((cubedroot(x))^2) -9 ) ?

OpenStudy (amistre64):

sqrt a, a > 0 a = cbrt(x^2)-9 cbrt(x^2)-9 > 0 cbrt(x^2) > 9 etc ...

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