6568
-190
109
155
45
-144
The numbers are: 20 and -48
-9.22043 and 18.22043 (to 5 dp).
736
-82
you could multiply 84 by 10 = 840 then multiply 84 by 2 = 168 add these two numbers = 1008
The factor pairs of 168 are (168,1)(84,2)(56,3)(42,4)(28,6)(24,7)(21,8)(14,12) None of them add up to or differ by 9. (3 and 6) and (2 and 7) are factors of 168.