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OpenStudy (anonymous):
Where does the graph of y = 2x2 - x - 3 cross the x-axis?
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sam (.sam.):
You know that when the graph touches the x-axis the 'y' values is zero
sam (.sam.):
So, 2x^2 - x - 3=0 (x+1)(2x-3)=0 Set each brackets =0 and solve for x
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