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A polynomial function f(x) has degree 6 and has real coefficients. It is given that 3, 2, 11−3i, and 11+28i are roots of f(x). What is the sum of all the roots of f(x)?

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the other two roots are 11+3i and 11-28i

So, just add them all up. 3+2+22+22 = 49

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