Find the equation and length of the common chord of the following circles.
`x^2 + y^2 - 5x - 6y + 4 = 0,`
`x^2 + y^2 - 2x -2 = 0 `

Find the equation and length of the common chord of the following circles. x^2 + y^2 + 2x + 2y + 1 = 0 , x^2 + y^2 + 4x + 3y + 2 = 0 .

Find the equation of the common chord of the following pair of circles. x^2 + y^2 - 4y + 3 = 0 , x^2 + y^2 - 5x - 6y + 4 = 0 .

Find the equation of the common chord of the following pair of circles. x^2 + y^2 + 3y+ 1 = 0 , x^2 + y^2 + 4x + 3y + 2 = 0 .

Find the equation of the common chord of the following pair of circles x^2+y^2-4x-4y+3=0 x^2+y^2-5x-6y+4=0

Find the equation of the common chord of the following pair of circles x^2+y^2-4x-4y+3=0 x^2+y^2-5x-6y+4=0

Find the equation to the common chord of the two circles x^(2) + y^(2) - 4x + 6y - 36 = 0 and x^(2) + y^(2) - 5x + 8y - 43 = 0 .

Find the equation and length of the common chord of the two circles S=x^2+y^2+3x+5y+4=0 and S=x^2+y^2+5x+3y+4=0

The length of common chord of the circles x^2 + y^2 - 6x - 4y + 13 - c^2 = 0 and x^2 + y^2 -4x - 6y + 13 -c^2 = 0 is