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Mathematics 20 Online
OpenStudy (anonymous):

Y= -2x^2+10x-11

OpenStudy (earthcitizen):

what's the problem?

OpenStudy (earthcitizen):

use quadratic formula

OpenStudy (earthcitizen):

https://www.wolframalpha.com/input/?i=+-2x%5E2%2B10x-11

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