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Mathematics 21 Online
OpenStudy (anonymous):

When solving quadratic equations Solve 3x2 = -12x - 15

OpenStudy (anonymous):

x = -4 ± 2 i= x = -4 ± i= x = -2 ± 2 i= x = -2 ± i= Possible answers

OpenStudy (rabya!):

last one -2 i

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