Finite Math Examples

$4 r^{3} - 36 r^{2} - 80 r$

Step 1

Factor $4 r$ out of $4 r^{3}$ .

$4 r (r^{2}) - 36 r^{2} - 80 r$

Step 2

Factor $4 r$ out of $- 36 r^{2}$ .

$4 r (r^{2}) + 4 r (- 9 r) - 80 r$

Step 3

Factor $4 r$ out of $- 80 r$ .

$4 r (r^{2}) + 4 r (- 9 r) + 4 r (- 20)$

Step 4

Factor $4 r$ out of $4 r (r^{2}) + 4 r (- 9 r)$ .

$4 r (r^{2} - 9 r) + 4 r (- 20)$

Step 5

Factor $4 r$ out of $4 r (r^{2} - 9 r) + 4 r (- 20)$ .

$4 r (r^{2} - 9 r - 20)$