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Status: Waiting for your answers.

Given:     f(x) = 7x3 + 30x2 + 3x - 20 x -5 -4 -3 -2 -1 0 1 2 3 4 5 y -160 0 52 38 0 -20 20 162 448 920 1620     Find: Determine the third zero (rounded to the nearest hundredth) using the known zeros and synthetic division.   Zero: