The document discusses factorizing a polynomial P(x) = 4x^4 + 8x^3 + 5x^2 + x - 3 over the complex field. It is given that P(x) has two rational zeros. The zeros are found to be 1/2 and -3/2. P(x) is then factorized as (2x - 1)(2x + 3)(x^2 + x + 1) = (2x - 1)(2x + 3)(x + (1/2))^2 - (1/4).