Mathematics

Mathematics

Problem

The number of common tangents to the circles x2+y2−4x−6y−12=0x^2 + y^2 - 4x - 6y - 12 = 0 and x2+y2+6x+18y+26=0x^2 + y^2 + 6x + 18y + 26 = 0 is: [JEE(Main)-2015] (1) 1 (2) 2 (3) 3 (4) 4

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