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Statement I . The equation 2x^2-3xy-2y^2...

Statement I . The equation `2x^2-3xy-2y^2+5x-5y+3=0` represents a pair of perpendicular straight lines.
Statement II A pair of lines given by `ax^2+2hxy+by^2+2gx+2fy+c=0` are perpendicular if `a+b=0`

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