Math Help - How to simplify this

1. How to simplify this

(1 - 5x - 6x^2) / (4x^2 - 12x - 7)

2. (1 - 5x - 6x^2) / (4x^2 - 12x - 7)
-(6x-1)(x+1)/(2x+1)(2x-7)

cannot see how to simplify that further hope that helps