1.

If m-a²/b²+c² + m-b²/c²+a² + m-c²/a²+b² = 3 then the value of m is :

A. a²-b²-c²
B. a²+b²+c²
C. a²+b²-c²
D. a²+b²
Answer» D. a²+b²


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