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Status: Waiting for your answers.

Given:     f(x) = 6x3 - 7x2 - 28x - 15 x -5 -4 -3 -2 -1 0 1 2 3 4 5 y -800 -399 -156 -35 0 -15 -44 -51 0 145 420     Find: Determine the third zero (rounded to the nearest hundredth) using the known zeros and synthetic division.   Zero: