Common chords

Common chords

7 marks
TGM Original
Two circles have equations x2+y2=25 and x2+y2-8x-6y+15=0. Find the equation and length of their common chord and both intersection points.

Solution:

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Answer:\(4x+3y=20\); \((5,0)\), \((\frac75,\frac{24}5)\); length \(6\).

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