If a(a - 2) = 2 and b(b - 2) = 2, where a ≠ b, then a + b =  Choose the most appropriate option:
A) −1  B) −2  C) 4  D) 46  E) 48
i.e. if a = -1 then b = 2   or if a = 2 then b = -1   But in each case a+b = -1+2 = -1   −1nswer: option −1
<result>A</result>
If a(a - 2) = 2 and b(b - 2) = 2, where a ≠ b, then a + b =