2 - quadratics

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6 Terms

1
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what is the discriminant

b2 - 4ac

indicates how many solutions a quadratic will have

2
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two real roots

discriminant greater than 0

3
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one real root

discriminant equal to 0

4
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how else can they describe one real root

a repeating root, two equal roots, etc

5
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no real roots

discriminant less than 0

6
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possible limitations of a quadratic model

has either maximum or minimum but not both

graphs are symmetrical (what goes up comes down or vice versa)