Pre-Algebra Examples

$(9 x^{2} - 8) + (9 x^{2} + 9 x + 3)$

Step 1

Remove parentheses.

$9 x^{2} - 8 + 9 x^{2} + 9 x + 3$

Step 2

Add $9 x^{2}$ and $9 x^{2}$ .

$18 x^{2} - 8 + 9 x + 3$

Step 3

Add $- 8$ and $3$ .

$18 x^{2} + 9 x - 5$

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