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

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

Step 1

Remove parentheses.

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

Step 2

Subtract $x^{2}$ from $3 x^{2}$ .

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

Step 3

Subtract $x$ from $4 x$ .

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

Step 4

Subtract $3$ from $- 4$ .

$2 x^{2} + 3 x - 7$