Factor 1-a^2-9n^2-6 an

$1 - a^{2} - 9 n^{2} - 6$ an

Step 1

Subtract $6$ from $1$ .

$- a^{2} - 9 n^{2} - 5$

Step 2

Factor $- 1$ out of $- a^{2} - 9 n^{2} - 5$ .

Factor $- 1$ out of $- a^{2}$ .

$- (a^{2}) - 9 n^{2} - 5$

Factor $- 1$ out of $- 9 n^{2}$ .

$- (a^{2}) - (9 n^{2}) - 5$

Rewrite $- 5$ as $- 1 (5)$ .

$- (a^{2}) - (9 n^{2}) - 1 (5)$

Factor $- 1$ out of $- (a^{2}) - (9 n^{2})$ .

$- (a^{2} + 9 n^{2}) - 1 (5)$

Factor $- 1$ out of $- (a^{2} + 9 n^{2}) - 1 (5)$ .

$- (a^{2} + 9 n^{2} + 5)$