If the axis of symmetry is at x = -3 and one of the zeros is at 4 then the other zero must be at equal distance from the axis , but on the other side, so will be at -10.
2(10-3) distribute = 2*10 is 20 and 2*3 is 6 20-6+(5-14/2) now 20-6 is 14 14+(5-14/2) now 14/2 is 7 14+(5-7) now 5-7 is -2 14+-2 is 12 the answer is 12 but if you want to you can do 12/3 to get the greatest common factor which is 4 hope i help you :P
