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kaila143 kaila143
  • 29-07-2015
  • Mathematics
Answered

A third degree polynomial equation with rational coefficients that has roots -4 and 2+i

Verified Answer :

JaySL JaySL
  • 29-07-2015

If one of the roots is 2+i, another must be 2-i.  We can express this polynomial as (x+4)(x-2-i)(x-2+i).  This expands to \(x^3-11x+20\).

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