Question 919119: Find the equation of the common chord for the circles x^2 + y^2 + 2x - 3=0 and x^2 + y^2 -6x-3=0 that intersect orthogonally Answer by ewatrrr(24785) (Show Source):
You can put this solution on YOUR website! x^2 + y^2 + 2x - 3= x^2 + y^2 -6x-3
8x = 0, x = 0 and y = ± √3
x = 0 the equation of the common chord