Algebra Examples

$7 x^{2} - 2 x + 9 + (3 x^{2} + 15 x - 4)$

Step 1

Remove parentheses.

$7 x^{2} - 2 x + 9 + 3 x^{2} + 15 x - 4$

Step 2

Add $7 x^{2}$ and $3 x^{2}$ .

$10 x^{2} - 2 x + 9 + 15 x - 4$

Step 3

Add $- 2 x$ and $15 x$ .

$10 x^{2} + 13 x + 9 - 4$

Step 4

Subtract $4$ from $9$ .

$10 x^{2} + 13 x + 5$

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