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Mathematics 21 Online
OpenStudy (anonymous):

limit x-->9 (9-x)/(3-sqrt(x))

OpenStudy (anonymous):

multiply top and bottom by the conjugate 3+sqrt(x) , then simplify

OpenStudy (anonymous):

thank u!

OpenStudy (anonymous):

Can you help me with mine? I'm having a brain fart... Factor: x^3-4x+1

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