ab(a - b) + bc(b - c) + ca(c - a) is equal to:
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. (b - a)(b - c)(c - a).
Trick: Asumes values of a, b, c
Let us assume a = 1, b = 2, c = 3
= 2(-1) + 6(-1) + 3(2)
= - 2
Now check the value of options