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Find all zeros of the polynomial function. Use the Rational Zero Theorem, Decarte's Ruke of Signs,...

Find all zeros of the polynomial function. Use the Rational Zero Theorem, Decarte's Ruke of Signs, and possibly the graph of the polynomial function showny by a graphing utility as ab aid in obtaining the first sero or the firtst root.
f(x)=x^4-4x^3-x^2+14x+10
Find the zeros of the polynomial function.

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