Pre-Algebra Examples

$(9 x^{2} + 6 x - 7) + (- 9 x - 5)$

Step 1

Remove parentheses.

$9 x^{2} + 6 x - 7 - 9 x - 5$

Step 2

Subtract $9 x$ from $6 x$ .

$9 x^{2} - 3 x - 7 - 5$

Step 3

Subtract $5$ from $- 7$ .

$9 x^{2} - 3 x - 12$

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