If a , b, c are all non zero and a+ b + c=0 prove that: a^2/bc + b^2/ca + c^2/ab = 3

You know the value of a+b+c, so try to factor a+b+c out of the expression:



Back to the equation:



You know that a+b+c=0.



The equation is true for any values of a, b, c, such that a+b+c=0. Proved.

Where’s the stuff st? ? lol sorry