-1
-8 and -15
8
The two numbers that when multiplied equal 56 are: 1 and 56 2 and 28 4 and 14 7 and 8
-17
-1
4*2=8
4
Not sure about 720 but if the answer were to be 72 then the two numbers are 8 and 9 8 x 9 = 72 8 + 9 = 17
-1
13
16 and 8
-91
-8 and -15
15 and 8
24
8