Question

if a plus b plus cis 0 then a cube plus b cube plus c cube is equal to k.abc is

Answer 1

Hlo friend...

Here is ur answer :

If (a+b+c) = 0

Then (a³+ b³+c³) = 3abc

HOPE IT HELPS YOU.. PLS MARK ME AS BRAINLIEST...

REGARDS
@sunita

Answer 2

a+b+c=0 AND a³+b³+c³=kabc find k ...

so now a+b+c=0

a+b=-c

cubing on both sides..

(a+b)³=(-c³)

a³+b³+3ab(a+b)= -c³

we know that a+b = -c

a³+b³+c³=3abc

so k=3

hope helped!!!