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OpenStudy (anonymous):
If an equation has a positive discriminant, how many times will the graph touch the x–axis?
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OpenStudy (saifoo.khan):
2
OpenStudy (anonymous):
twice. positive discriminant means it has two real zeros. so it crosses the x - axis twice, that is where it is zero
OpenStudy (saifoo.khan):
lol, Good question.
OpenStudy (anonymous):
assume it is quadratic, otherwise "discriminant" doesn't really make any sense
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