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OpenStudy (anonymous):
slove the equation x^2=7x+19=0
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OpenStudy (gorv):
x^2+7x+19=0 use quadratic formula for finding the root
OpenStudy (unklerhaukus):
the quadratic formula x=[-b±√(b^2-4ac)]/2a
OpenStudy (anonymous):
x = [-b +- sqrt(b^2 -4 a c)]/2a
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