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Mathematics 8 Online
OpenStudy (anonymous):

Find a polynomial function with real coefficients that has the given zeros. (There are many correct answers.) 4, 1 − 4i . this is my incorrect answer. x^3-6x^2+25x-68

OpenStudy (nenadmatematika):

(x-4)(x+1)(x-4i)(x+4i)=(x-4)(x+1)(x^2+16) now multiply these carefully and you'll get the correct answer...if you don't understand I can explain it for you...:D

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