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April 26, 2015

Homework Help: math

Posted by peter on Sunday, November 7, 2010 at 6:51am.

completing the square
3x^2 +15 -33 =0
a=3
b=15
c=-33

-15+or- sqrt225-4*3*-33/2*3

-15+or-sqrt225+396/6

is this right because don't you have to subtract not add the 396

please help. thanks

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