If a(a + 2) = 35 and b(b + 2) = 35, where a ≠ b, then a + b = Choose one:
A) -5
B) -6
C) -7
D) -2
E) -10
i.e. if a = 5 then b = -7   or if a = -7 then b = 5   But in each case a+b = 5-7 = -2   Answer: -2
<result>D</result>
If a(a + 2) = 35 and b(b + 2) = 35, where a ≠ b, then a + b =