If a+b+c=0. Then find the value of (a+b)^2 /ab + ( b+c)^2 /bc + (c+a)^2/ca.

If a+b+c=0. Then find the value of (a+b)^2 /ab + ( b+c)^2 /bc + (c+a)^

1.	If a+b+c=0. Then find the value of (a+b)^2 /ab + ( b+c)^2 /bc + (c+a)^2/ca.
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