Question

If a, b and c are positive integers, then
(a - b -c)^3. - a^3 + b^3 + c^3 is always divisible by
(1) Only (a + b) (2) Only (b + c)
(3) 3(a - b)
(4) 3(a + b)(b + c)(a + c)​

Answer 1

Answer: 3

Step-by-step explanation: