Pre-Algebra Examples

$(- 10 x^{2} + x) + (- 2 x^{2} + 9 x + 7)$

Step 1

Remove parentheses.

$- 10 x^{2} + x - 2 x^{2} + 9 x + 7$

Step 2

Subtract $2 x^{2}$ from $- 10 x^{2}$ .

$- 12 x^{2} + x + 9 x + 7$

Step 3

Add $x$ and $9 x$ .

$- 12 x^{2} + 10 x + 7$

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