Pre-Algebra Examples

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

Step 1

Remove parentheses.

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

Step 2

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

$9 x^{3} - 4 x^{2} - 4 x^{2}$

Step 3

Subtract $4 x^{2}$ from $- 4 x^{2}$ .

$9 x^{3} - 8 x^{2}$

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