what can multiply to give you 80 but add up to give you 11

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siimeon42 siimeon42

01-02-2016
Mathematics

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what can multiply to give you 80 but add up to give you 11

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AL2006 AL2006 · Answer 1 · 2016-02-01T05:08:34+01:00

AL2006 AL2006

01-02-2016

There are no real numbers that can do that job.

There's a pair of complex numbers that can do it.
They are

   5.5 + i4.97
and
   5.5 - i4.97 .

   ' i ' = the imaginary unit = √(-1)

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