Respuesta :

Step-by-step explanation:

[tex](x^2 - x+1)(2x^2 - x+4) = 0 \\ 2x {}^{4} - x {}^{3} + 4x {}^{2} - 2x {}^{3} + x {}^{2} - 4x + 2x {}^{2} - x + 4 = 0 \\ 2x {}^{4} - 3x {}^{3} + 7x {}^{2} - 5x + 4 = 0[/tex]