Precalculus Examples

$- 3 x y^{2} + 9 x$

Step 1

Factor $- 3 x$ out of $- 3 x y^{2}$ .

$- 3 x (y^{2}) + 9 x$

Step 2

Factor $- 3 x$ out of $9 x$ .

$- 3 x (y^{2}) - 3 x (- 3)$

Step 3

Factor $- 3 x$ out of $- 3 x (y^{2}) - 3 x (- 3)$ .

$- 3 x (y^{2} - 3)$