college algebra I - vocab (unit #01 test)

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13 Terms

1
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value of discriminant (0)

1 real number (rational) solution

2
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value of discriminant (negative)

2 complex (imaginary) solutions

3
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value of discriminant (positive and a perfect square)

2 real (rational) solutions

4
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value of discriminant (positive and not a perfect square)

2 real (irrational) solutions. you HAVE to keep the square root

5
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completing the square formula

x2 + bx + c = o

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quadratic formula

-b +- square root of b2 - 4ac all over 2a

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powers of i (i1 )

i

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powers of i (i2 )

-1

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powers of i (i3 )

-i

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powers of i (i4 )

1

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identity equation

true for all real numbers

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conditional equations

true for only some real numbers

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inconsistent/contradiction equations

never true (no solution)