Answer:
Pair of numbers: -3 and -5
Factors : (x-5)(x-3)
Step-by-step explanation:
Given: 
We need to factor it using AC method.
For equation: 
For factor this ac and sum b
For our equation: a=1, b=-8 and c=15
Therefore,
Product = ac = (1)(15) = 15
We need to choose two number whose product is 15 and sum -8
First we find all the factor of 15: 1x15 3x5
If we take 3x5
Product: (-3)(-5) = 15
Sum: -3-5 = -8
Pair of numbers: (-3,-5)
Now we will factor it.





The factors are (x-5) and (x-3)