What is the greatest common factor of 52x5 and 12x4?

The factorization of 8x3 -125 is (2x-5)(jx2 +kx+25)

Abiologist is recording the loss of fish in a pond. he notes the number of fish, f, in the pond on june 1. on july 1 there were 63 fish in the pond, which is 52 fewer fish than were in the pond on june 1. which equation represents this situation? a. f – 52 = 63 b. f – 63 = 52 c. 63 – f = 52 d. f – 63 = –52

Can anyone me with 32,33,36,37,and 40.