Respuesta :
Answer:
[tex]\huge\boxed{(x+4)(x-1)}[/tex]
Step-by-step explanation:
[tex]\sf x^2 + 3x-4 \\\\Using \ mid \ term \ break \ formula\\\\x^2 + 4x-x -4\\\\x(x+4)-1(x+4)\\\\Using \ (x+4) \ common\\\\(x+4)(x-1)\\\\\rule[225]{225}{2}[/tex]
Hope this helped!