If the pair of lines 6x^(2)-5xy-6y^(2)=0...

If the pair of lines `6x^(2)-5xy-6y^(2)=0, 6x^(2)-5xy-6y^(2)+x+5y-1=0` form a square then area of square is

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The correct Answer is:

`OABC` is a square.

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