Question

(X³-x/2x-6)(x²-2x-3/x²-1)

Answer 1

you have wrote it right sure ?

Answer 2

x2 -2x-3=(x-3)(x+1)
x2 -1=(x-1)(x+1)
x3 -x=x(x2 -1)=x(x-1)(x+1)
2x-6=2(x-3)

Answer 3

check what and how you will can simplify