Answer:
c
Step-by-step explanation:
(-1-3i)(-6-i)
=6+i+18i+3i^2
=3i^2+19i+6. Hope it help!
Prime numbers are numbers that we can only divide by 1 and it self.
example- 2 can only be divided by 2 and 1
composite numbers are numbers we can divide by two or more numbers
example- 4 can be divided by 1,2 and 4.