-10=-19 is the answer goodluck
64 is a composite because 64 × 1 = 64 and 8×8=64
I think c) 9 but I’m not too sure
The greatest common factor of 12 and 15 should be 3 since the only factors of 15 are 1,3,5,and 15 and 3 is the only factor that 15 shares with 12
Am not sure but i think its 9m^4-49n^6 hope it helps :)
