Pre-Algebra Examples

$2 n^{3} + 4 n^{2} - 7$ and $- n^{3} + 8 n - 9$

Step 1

Add the expressions.

$2 n^{3} + 4 n^{2} - 7 - n^{3} + 8 n - 9$

Step 2

Subtract $n^{3}$ from $2 n^{3}$ .

$n^{3} + 4 n^{2} - 7 + 8 n - 9$

Step 3

Subtract $9$ from $- 7$ .

$n^{3} + 4 n^{2} + 8 n - 16$

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