Evaluate the following function for the input given below:
`f(6)` when `f(x) = (x^2-4+x)/(5x-6)`.
`f(6)=` s
`g(-5.6)` when `g(x) = (-2x^2+1.7x-3(8-x))/(9-3x)`.
`g(-5.6)=`
`g(m)` when `g(x) = 2/3x-5x^3+x(x+3)`.
`g(m)=`
`f(x+3)` when `f(x) = 5x^2+6x-10`.
`f(x+3)=`