I had another question for the problem (x(x-8))/(x^2-9x-52)<=0

my work is:

x(x-8)/(x+4)(x-13)<=0

i then did a number line with the numbers -4,0,8,13 and did the sign chart underneath. The answer I ended getting is (-4,0)U(8,13) I retried the problem several times and still got the same answer.

I also did the problem (x-4)/(x+13)=>0 with that i got the answer (-infinity,-13]U[4,infinity)

both answers were incorrect also.