Pre-Algebra Examples

$(x^{2} + 3 x) + (- 2 x^{2} + 9 x + 5)$

Step 1

Remove parentheses.

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

Step 2

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

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

Step 3

Add $3 x$ and $9 x$ .

$- x^{2} + 12 x + 5$

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