0
Wiki User
19
Jody Fay ∙
x + y = 7
y = 7 - x
xy = 12
x(7 - x) = 12
x2 - 7x - 5 = 0
(x-3)(x-4) = 0
x = 3
y = 4
20
-17
3452
22
137
-30
-127
-936
-117
17
-21, 27
5