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16 Cards in this Set
- Front
- Back
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i to the first
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i
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i to the second
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-1
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i to the third
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-i
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i to the fourth
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1
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Quadratic Formula
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-b+or- the square root of b squared - 4ac over 2a
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To find the discriminant
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b squared - 4ac
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When b squared - 4ac equals 0
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one solution, one x-int, one real solution, vertex of parabola
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When b squared - 4ac is greater than 0
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2 solutions, 2 x-ints, 2 real solutions, 2 real zeros
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When b squared - 4ac is less than 0
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2 complex (imaginary solutions), no x-ints
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Vertex Form
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y-k=a(x-h) squared
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If a is positive, which way does the parabola face?
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up
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If a is negative, which way does the parabola face?
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down
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To find the vertex of the standard form
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h=-b over 2a
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After finding h, how do you find k for the vertex?
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plug in your answer for h into the original equation
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When solving radical equations, if the denominator is odd there are how many answers?
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one
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When solving radical equations, if the denominator is even, what do you do?
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Square it to get more than one answer
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