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OpenStudy (anonymous):
solve the equation 84n^2+49n=0 i got 0,-7/12
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OpenStudy (anonymous):
correct, you can check you answers with wolframalpha http://www.wolframalpha.com/input/?i=84n%5E2%2B49n%3D0+ and if you get something wrong you can show your work and ask what was wrong
OpenStudy (anonymous):
7n ( 12n + 7) n = 0 n = -7/12
OpenStudy (anonymous):
That's correct
OpenStudy (anonymous):
oh wow, thanks
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