If a^2+b^2+c^2+ab-bc-ca=0 then a:b:c is: – McqOptions

MCQOPTIONS

1.	If a^2+b^2+c^2+ab-bc-ca=0 then a:b:c is:
A.	1:1:2
B.	2:1:1
C.	1:1:1
D.	1
Answer» D. 1

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