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OpenStudy (anonymous):
Where does the graph of y=2x^2-8x-5 cross the x-axis?? PLEASE HELP<3
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OpenStudy (anonymous):
The answer choices: 4.55,0 and -.55,0 4.23,0 and -.46,0 4.32,0 and -.49,0 4.48,0 and -.51,0
OpenStudy (amistre64):
you should prolly apply the quadratic formula
OpenStudy (amistre64):
completing the square is a longer method ... but just as effective
OpenStudy (amistre64):
another idea is to find the axis of the vertex, and it will be the midpoint between the intercepts
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