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a, $11x-7x^2+9+2x=-7x^2+13x+9$
$g'\left(x\right)=-14x+13$

b, $4x^2-4x^4-2x+2x^3$
$=-4x^4+2x^3+4x^2-2x$
$g'\left(x\right)=-16x^3+6x^2+8x-2$

c, $x2-4x+4\ ja\ g'\left(x\right)\ =\ \ 2x-4$