Pre-Algebra Examples

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

Step 1

Remove parentheses.

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

Step 2

Add $7 x^{2}$ and $2 x^{2}$ .

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

Step 3

Subtract $x$ from $- 5 x$ .

$9 x^{2} - 6 x$

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