Question

a ( b - c ) - b ( c - a ) - c ( a - b ). ​

Answer 1

Answer:

a/(b+c)=b/(c+a)=c/(a+b)=k

a=k(b+c)

b=k(c+a)

c=k(a+b)

by property sum of numerator/sum of denominator is also = k

a+b+c/2(a+b+c)=k

k=1/2

If a+b+c=0

a+b=−corb+c=−a

a/b+c=a/−a=−1=k

So k=−1or1/2