AP EAMCET Engineering 2018 Apr 23 Shift 1 Paper

Section: Mathematics
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Question : 52 of 160
 
Marks: +1, -0
The length of the transverse common tangent of the circles x2+y2 - 2x + 4y + 4 = 0 and x2+y2 + 4x - 2y + 1 = 0 is
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