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OpenStudy (anonymous):
Use the quadratic formula to solve the equation, please help me
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OpenStudy (anonymous):
\[x ^{2}+4x-9\]
OpenStudy (across):
\[ax^2+bx+c\]\[\frac{-b\pm\sqrt{b^2-4ac}}{2a}\]
OpenStudy (anonymous):
a = 1, b = 4, c = -9
OpenStudy (geometry_hater):
|dw:1321574495390:dw| quadratic formula in written form
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