Simplify 2x^2-4x+3+(x^2-4x-4)

$2 x^{2} - 4 x + 3 + (x^{2} - 4 x - 4)$

Remove parentheses.

$2 x^{2} - 4 x + 3 + x^{2} - 4 x - 4$

Add $2 x^{2}$ and $x^{2}$ .

$3 x^{2} - 4 x + 3 - 4 x - 4$

Subtract $4 x$ from $- 4 x$ .

$3 x^{2} - 8 x + 3 - 4$

Subtract $4$ from $3$ .

$3 x^{2} - 8 x - 1$

Simplify 2x^2-4x+3+(x^2-4x-4)

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