Pre-Algebra Examples

$(- x^{2} + 9) + (- 3 x^{2} - 11 x + 4)$

Step 1

Remove parentheses.

$- x^{2} + 9 - 3 x^{2} - 11 x + 4$

Step 2

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

$- 4 x^{2} + 9 - 11 x + 4$

Step 3

Add $9$ and $4$ .

$- 4 x^{2} - 11 x + 13$

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$