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OpenStudy (anonymous):
Use quadratic formula to solve 2x^2-3x-9=0
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OpenStudy (radar):
\[-(-3)\pm \sqrt{(-3)^{2}-4(2)(-9)}\over 2(2)\]you do the math.
OpenStudy (radar):
It factors nicely into (x-3)(2x+3) but they ask you to use the quadratic formula
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