Evaluate the following function for the input given below:
`f(8)` when `f(x) = (x^2-4+x)/(6x-6)`.
`f(8)=` s
`g(-5.3)` when `g(x) = (-4x^2+1.8x-3(8-x))/(8.7-5x)`.
`g(-5.3)=`
`g(m)` when `g(x) = 2/3x-4x^3+x(x+6)`.
`g(m)=`
`f(x+1)` when `f(x) = 5x^2+7x-10`.
`f(x+1)=`