Radical axis
Two-dimensional geometry · Mathematics
Study notes
Q: Find the radical axis of x²+y²=25 and (x−3)²+y²=16. S₁ = x²+y²−25. S₂ = x²−6x+9+y²−16 = x²+y²−6x−7. S₁−S₂ = −25+6x+7 = 0 → 6x = 18 → x = 3.
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Two-dimensional geometry · Mathematics
Q: Find the radical axis of x²+y²=25 and (x−3)²+y²=16. S₁ = x²+y²−25. S₂ = x²−6x+9+y²−16 = x²+y²−6x−7. S₁−S₂ = −25+6x+7 = 0 → 6x = 18 → x = 3.