The equation of the radical axis of the circles and is

MATHEMATICS · Single correct · A Level · Mathematics · Coordinate geometry in the (x y) plane · Coordinate geometry in the (x y) plane

Problem

The equation of the radical axis of the circles x2+y2+x−y+2=0x^2+y^2+x-y+2=0 and 3x2+3y2−4x−12=03x^2+3y^2-4x-12=0 is (1) 2x2+2y2−5x+y−14=02x^2+2y^2-5x+y-14=0 (2) 7x−3y+18=07x-3y+18=0 (3) 5x−y+14=05x-y+14=0 (4) None of these

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