AP EAPCET 24-Aug-2021 Shift 2 Paper

Section: Mathematics

Question : 56 of 160

Marks: +1, -0

If S=x2+y2+2x+17y+4=0, S′=x2+y2+7x+6y+11=0 and S"=x2+ y2−x+22y+3=0 are three circles, then the length of tangent from their radical center to S=0 is ______ units

√53
√57
√15
√17

Validate

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