Pre-Algebra Examples

$7 n^{2} - 21$

Step 1

Factor $7$ out of $7 n^{2}$ .

$7 (n^{2}) - 21$

Step 2

Factor $7$ out of $- 21$ .

$7 n^{2} + 7 \cdot - 3$

Step 3

Factor $7$ out of $7 n^{2} + 7 \cdot - 3$ .

$7 (n^{2} - 3)$

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