SOLUTION: what adds to get -1 and multiplies to get -1 ?

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Question 969946: what adds to get -1 and multiplies to get -1 ?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Two numbers, n and m.
system%28n%2Bm=-1%2Cnm=-1%29