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OpenStudy (anonymous):
solve this quadratic function??
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OpenStudy (anonymous):
post ur equation...
OpenStudy (anonymous):
\[105= -5t ^{2} - 10t + 180\]
OpenStudy (anonymous):
5t^2+10t-75=0 =>t^2+2t-15=0 => (t+5)(t-3)=0 => t=3,-5.
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