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Simplifying f(x) = z3 + 3iz2 + -3z + -1i Multiply f * x fx = z3 + 3iz2 + -3z + -1i Reorder the terms: fx = -1i + 3iz2 + -3z + z3 Solving fx = -1i + 3iz2 + -3z + z3 Solving for variable 'f'. Move all terms containing f to the left, all other terms to the right. Divide each side by 'x'. f = -1ix-1 + 3ix-1z2 + -3x-1z + x-1z3 Simplifying f = -1ix-1 + 3ix-1z2 + -3x-1z + x-1z3
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