if a ( a + 2 ) = 80 and b ( b + 2 ) = 80 , where a ≠ b , then a + b =
i . e . if a = 8 then b = - 10 or if a = - 10 then b = 8 but in each case a + b = - 10 + 8 = - 2 answer : e
add(divide(80, const_10), divide(80, divide(80, const_10)))