Question

if a + b + C is equal to zero then evaluate A3 + B3 + C3 is equal to

Answer 1

if a + b+ c =0
then A3+B3 +C3 =3abc
A+B+C =0
THEN A +B =-C
NOW (A+B)3
A3 +B3 +3AB(A+B)
PUTTING A+B = -C ABOVE
A3+B3 -3ABC=0