Question

without actually calculationg. find the value of (25)²-(75)²+(50)²

Answer 1

if a + b + c = 0
then a^2 + b^2 + c^2 = 3abc

Answer 2

a2 +b2+c2=3abc
(25)2+(-75)2+(50)2=3×25×-75×50
=75×-3750
= -281,250