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Find a polynomial of degree 3 with zeros of 4, 2i and -2i

Find a polynomial of degree 3 with zeros of 4, 2i and -2i
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Find a polynomial of degree 3 with zeros of 4, 2i and -2i

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User Nader Ghanbari
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1 Answer

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(x-4)(x-2i)(x+2i)=\\ (x-4)(x^2+4)=\\ x^3+4x-4x^2-16=\\ x^3-4x^2+4x-16
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User FooF
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