What can I use as a Plus or Minus sign?

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John Steele
John Steele on 22 Sep 2015
Answered: Joseph Cheng on 22 Sep 2015
In this equation I can't figure out how to make the + into a plus or minus sign to get both answers other than doing it twice with s1 and s2 instead of s.
s=(-800/(2*.1))+(sqrt(((800/(.1*2))^2)-(1/(.1*.000001))));

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Accepted Answer

Joseph Cheng
Joseph Cheng on 22 Sep 2015
s=(-800/(2*.1))+[1 -1]*(sqrt(((800/(.1*2))^2)-(1/(.1*.000001))))

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