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OpenStudy (anonymous):
Why does f(x)=4x^2-4x+21 not have an x-intercept?
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OpenStudy (anonymous):
This is why. It doesn't cross it.
OpenStudy (anonymous):
You're the best!
OpenStudy (anonymous):
delta=b^2-4ac<0 so no real root, so no x intercept..
OpenStudy (anonymous):
Thanks
OpenStudy (anonymous):
np
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