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If the line x+αy+1=0 is perpendicular to the line 2x−βy+1=0 and parallel to the line x−(β−3)y−1=0, then the value of α+β is

Answer» If the line x+αy+1=0 is perpendicular to the line 2xβy+1=0 and parallel to the line x(β3)y1=0, then the value of α+β is


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