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

User Alexandre FILLATRE
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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.
User Alfian Busyro
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