Ok, this is how you are suppose to do them.
One of them I got right:
f(x)=x^3+3x^2+6x-11
x=-5
1 3 6 -11
-5 10 -80
___________
1 -2 16 -91
-91 was the answer...
You take the first # down multiply it by x or -5...
1 multiplied by -5
-5 put it under the next number, add them, then do it over....till all the numbers are used.