Answer:
A
Step-by-step explanation:
We know the following:

so the segment EF is equal to

and here we can do a trick :)

you see it's the same

now we plug the values given

so it's option A
Hello,
x²-64=(x+8)(x-8)
============
Answer:
(25,12)
Step-by-step explanation:
pattern A=20+5
=25
pattern B=14-2
=12
25,12
This answer seems to be C