Pre-Algebra Examples

$(5 x^{2} - 9) + (- 10 x + 7)$

Step 1

Remove parentheses.

$5 x^{2} - 9 - 10 x + 7$

Step 2

Add $- 9$ and $7$ .

$5 x^{2} - 10 x - 2$

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