Respuesta :

rlesandisusanya

Answer:

[tex](x + 3)(4 - 3x)[/tex]

Step-by-step explanation:

[tex]12 - 5x - 3 {x}^{2} \\ - 3 {x}^{2} - 5x + 12 \\ - {3x}^{2} - 9x + 4x + 12 \\ - 3x(x + 3) + 4(x + 3) \\ (x + 3)( - 3x + 4) \\[/tex]