Question 963657
(-6)×xy×(-12x-3y-1)

1. -6xy(-12x-3y-1)
2. -(-6xy*12x-6xy*3y+6xy(-1))
3. -(-6 *12xxy -6*3xyy-6xy)
4. -(-72x ^1+1 y-18xy ^1+1- 6xy)