Question

Can anyone help me with this the last answer choice is wrong

Answer 1

Explanation:

for all x>6

x-6>0

`(6x-x^2)/(x^2-4x-12) \\=(-x(x-6))/(x^2-6x+2x-12) \\=(-x(x-6))/(x(x-6)+2(x-6)) \\=(-x(x-6))/((x-6)(x+2)) \\=(-x)/(x+2) \\by~dividing~by~x-6`

Answer 2

It's the 2nd one

Explanation: