SOLUTION: If the discriminant value is 36 then how many x intercepts will the graph have
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Question 1084987
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If the discriminant value is 36 then how many x intercepts will the graph have
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Alan3354, Theo
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Answer by
Alan3354(69443)
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If the discriminate [sic] value is 36 then how many x intercepts will the graph have
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discriminant > 0 --> 2 intercepts.
Answer by
Theo(13342)
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the discriminant is b^2 - 4ac.
that's the expression within the square root sign of the quadratic formula.
if the discriminant is 0, then you have 1 real solution.
if the discriminant is negative, then you have 2 complex solutions (not real).
if the discriminant is positive, then you have 2 real solutions.
if the discriminant is positive and a perfect square, then you have 2 real solutions that are rational.
here's a couple of references.
http://www.mathwords.com/d/discriminant_quadratic.htm
http://www.purplemath.com/modules/quadform2.htm