Answer:
[tex]y = - (x + 1)(x - 5) \\ y = ( - x - 1)(x - 5) \\ y = - x(x - 5) - 1(x - 5) \\ y = - x {}^{2} + 5x - x + 5 \\ y = x { }^{2} + 4x + 5[/tex]
I am not sure of the question but I hope dis helps