Answer:
Prime factors are factors of a number that are, themselves, prime numbers.
Example: the prime factor of 15 are 3 and 5 because 3x5=15 and they are both prime numbers.
80/729
Step-by-step explanation:
8/18x8/18x10/18=640/5832
The second one, -11/12
I used a website so sorry I don't have an explanation
2.5 dollars
6(4r+5)
Hope this helped!