Mathematics, 01.03.2021 01:00 Zagorodniypolina5

NEED HELP FAST PLZ Three roots of the polynomial equation x^4-4x^3-2x^2+12x+9=0 are 3,-1 and -1 explain why the fourth root must be a real number. And find the fourth root

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NEED HELP FAST PLZ Three roots of the polynomial equation x^4-4x^3-2x^2+12x+9=0 are 3,-1 and -1 exp...

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