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OpenStudy (anonymous):
if we asked to find the zero function r(t)=5t3-8t2+7t +2 which task would you complete first - rational root theorem and descartes' rule signs ?
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OpenStudy (mertsj):
I would use descartes' rule of signs first.
OpenStudy (anonymous):
why please
OpenStudy (mertsj):
Because if Descartes shows me that there are no positive roots then I wouldn't try any positive numbers as a result of the rational roots theorem.
OpenStudy (anonymous):
good answer ! thank you
OpenStudy (mertsj):
yw
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