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OpenStudy (anonymous):
solve 2 tan^2 x + 7 tan x - 15 = 0
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OpenStudy (anonymous):
tan(x) = -5 or 3/2
OpenStudy (anonymous):
how did you get that?
OpenStudy (anonymous):
Use quadratic formula. tan(x) = (-b +/- SQRT(b^2 - 4ac))/2a
OpenStudy (anonymous):
ah I see now, thanks
OpenStudy (anonymous):
so, there's no degree answer right?
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