SOLUTION: when solving for quadric equations how do you get x equal to zero. do you do GCF?

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Question 72727: when solving for quadric equations how do you get x equal to zero. do you do GCF?
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
The quadratic formula says:
If ax^2+bx+c=0
then x=[-b+-sqrt(b^2-4ac)]/(2a)
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It is a means of determinaing the x-intercepts of a
quadratic function. Why?
At the x-intercepts the y-value is zero.
Therefore ax^2+bx+c=0
Therefore the quadratic formula tells you the x-values
that go with y=0.
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Cheers,
Stan H.