I get:
I have been trying this for 2 days and I can"t seem to get the right answer \
when f(x) =(x+1)
and f(x) = (-x)
when its (x-1) i get the following
2(x-1)^2 +7(x-1)-8
2x^2-4x+2+7x+7x-8
2x^2+3x-1 Is my solution right?
And -X i am just not sure I got 2x^2-8x-8 this as my answer