Simplify -2x^2+4-7x^2-4x+2-2+4x

$- 2 x^{2} + 4 - 7 x^{2} - 4 x + 2 - 2 + 4 x$

Combine the opposite terms in $- 2 x^{2} + 4 - 7 x^{2} - 4 x + 2 - 2 + 4 x$ .

Subtract $2$ from $2$ .

$- 2 x^{2} + 4 - 7 x^{2} - 4 x + 0 + 4 x$

Add $- 2 x^{2} + 4 - 7 x^{2} - 4 x$ and $0$ .

$- 2 x^{2} + 4 - 7 x^{2} - 4 x + 4 x$

Add $- 4 x$ and $4 x$ .

$- 2 x^{2} + 4 - 7 x^{2} + 0$

Add $- 2 x^{2} + 4 - 7 x^{2}$ and $0$ .

$- 2 x^{2} + 4 - 7 x^{2}$

Subtract $7 x^{2}$ from $- 2 x^{2}$ .

$- 9 x^{2} + 4$