If m=a+1 /a-1 and n =a-1 /a+1, then m²+n²-3 mn is equal to :

1.	If m=a+1 /a-1 and n =a-1 /a+1, then m²+n²-3 mn is equal to :
Answer» Mujhe toh question he lag rha hai ?? ?? qstn h

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