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I need help with this problem Factor the following polynomial and determine all zeros: real and imaginary. Demonstrate your use of Descartes Rule of Signs

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I need help with this problem

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Factor the following polynomial and determine all zeros: real and imaginary. Demonstrate your use of Descartes Rule of Signs to narrow down your list of possible rational zeros. Also, demonstrate that imaginary roots come in conjugate pairs: f(x) =x4 +3x3 +5x2 +9x + 6ninopromotpush he snivellot and sthe

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