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OpenStudy (anonymous):
Use the quadratic formula to solve the equation x2 - 2x - 4= 0.
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OpenStudy (campbell_st):
the quadratic formula is \[x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}\] in your equation, a =1 b = -2 and c = -4 substitute and evaluate
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