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OpenStudy (anonymous):
how can you tell whether the equation of a parabola will touch the x axis at only one point?
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OpenStudy (anonymous):
Using the quadratic formula and the discriminant. The discriminant is the B^2-4ac. If it is positive, there is two real solutions. If it is equal to 0, there is one real and one imaginary. If it is negative, there is two imaginary solutions.
OpenStudy (anonymous):
is there a way to tell just by looking at the equation?
OpenStudy (anonymous):
this can help you http://answers.yahoo.com/question/index?qid=20091116194157AAUb22j
OpenStudy (anonymous):
aright. Thanks for the help! You have good karma coming back to you! :)
OpenStudy (anonymous):
Jjajajaj yes :D Could you tick best response please :D
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