Equation & Position in Circle
Circle Line Perpendicular Bisector
If P is a point on the circle x2 + y2 = 4, Q is a point on the straight line 5x + y + 2 = 0 and x – y + 1 = 0 is the perpendicular bisector of PQ, then 13 times the sum of abscissa of all such point P is _____.