What can I use as a Plus or Minus sign?

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John Steele
John Steele am 22 Sep. 2015
Beantwortet: Joseph Cheng am 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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Joseph Cheng
Joseph Cheng am 22 Sep. 2015
s=(-800/(2*.1))+[1 -1]*(sqrt(((800/(.1*2))^2)-(1/(.1*.000001))))

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