Evaluate the following function for the input given below:
`f(6)` when `f(x) = (x^2-5+x)/(6x-6)`.
`f(6)=` s
`g(-4)` when `g(x) = (-3x^2+1.7x-2(6-x))/(8.7-5x)`.
`g(-4)=`
`g(m)` when `g(x) = 2/3x-6x^3+x(x+4)`.
`g(m)=`
`f(x+4)` when `f(x) = 3x^2+5x-11`.
`f(x+4)=`