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Mathematics 8 Online
OpenStudy (anonymous):

9x^2-5x-7=0

OpenStudy (anonymous):

http://www.purplemath.com/modules/solvquad.htm

OpenStudy (anonymous):

Quadratic formula bro

OpenStudy (saifoo.khan):

\[\frac{1}{18}(5-\sqrt{277}),\frac{1}{18}(5+\sqrt{277})\]

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