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[" Find the equations of direct common tangents "],[" of the circles "x^(2)+y^(2)+22x-4y-100=0" and "],[x^(2)+y^(2)-22x+4y+100=0" .(MARCH-2007) "]

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Find the direct common tangents of the circles x^(2) + y^(2) +22x -4y -100 =0 and x^(2) + y^(2) -22x + 4y +100 =0

Find the direct common tangents of the circles x^(2) + y^(2) +22x -4y -100 =0 and x^(2) + y^(2) -22x + 4y +100 =0

Find the equation of the pair of direct commonr tangents to the circies x^(2)+y^(2)+22x+4y-100=0 and x^(2)+y^(2)-22x+4y+100=0

Find the direct common tangents of the circles. x^(2) + y^(2) + 22x - 4y - 100 =0 and x^(2) + y^(2) - 22x + 4y + 100 = 0.

Find the transverse common tangents of the circles x^(2) + y^(2) -4x -10y + 28 = 0 and x^(2) + y^(2) + 4x - 6y + 4= 0.

Find the transverse common tangents of the circles x^(2) + y^(2) -4x -10y + 28 = 0 and x^(2) + y^(2) + 4x - 6y + 4 =0.

The number of common tangents of the circles x^(2)+y^(2)+4x+1=0 and x^(2)+y^(2)-2y-7=0 , is