add ab-bc,bc-ca,ca-ab
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Step-by-step explanation:
QUESTION:-
ADD: ab-bc,bc-ca,ca-ab
ANSWER:-
ab-bc+bc-ca+ca-ab
(ab-ab)(-bc+bc)(-ca+ca)
(ab-ab)=0
(-bc+ba)=0
(-ca+ca)=0
HENCE, (0)+(0)+(0)=0
=0
ab-bc+bc-ca+ca-ab=0
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