Question 1066192
Input is x+h instead of just x.


{{{g(x+h)=2(x+h)^2-(x+h)+1}}}


{{{2(x^2+2hx+h^2)-x-h+1}}}


{{{2x^2+4hx+2h^2-x-h+1}}}


{{{2x^2+4hx-x+2h^2-h+1}}}


{{{2x^2+(4h-1)x+2h^2-h+1}}}
either of the last two forms might be what you want.