Simplify (-5x^2-4x-1)+(-4x^2-4x)

$(- 5 x^{2} - 4 x - 1) + (- 4 x^{2} - 4 x)$

Step 1

Remove parentheses.

$- 5 x^{2} - 4 x - 1 - 4 x^{2} - 4 x$

Step 2

Subtract $4 x^{2}$ from $- 5 x^{2}$ .

$- 9 x^{2} - 4 x - 1 - 4 x$

Step 3

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

$- 9 x^{2} - 8 x - 1$