AP EAMCET · Maths · Circle
The equation of radical axis of the circles and is
- A
- B
- C
- D
Answer & Solution
Correct Answer
(C)
Step-by-step Solution
Detailed explanation
Given: S1: x2+y2+4x+6y+7=0 S2: 4x2+4y2+8x+12y-9=0 Equation of radical axis of circles is S1-S2=0 S1: x2+y2+4x+6y+7=0 S2: x2+y2+2x+3y-94=0 Radical axis: S1-S2=0 ⇒ x2+y2+4x+6y+7-x2+y2+2x+3y-94=0 ⇒ 2x+3y+374=0 ⇒ 8x+12y+37=0
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