Find Center and Radius of Circle

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    Center Circle Radius
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SUMMARY

The discussion focuses on determining the center and radius of the circle represented by the equation x² + y² - 10x + 2y + 17 = 0. The method of completing the square is confirmed as an effective technique for solving this problem. By rewriting the equation in the form (x² - 10x + ?) + (y² + 2y + ?) = ?, users can easily identify the center and radius of the circle. This approach is straightforward and provides clear results.

PREREQUISITES
  • Understanding of quadratic equations
  • Knowledge of completing the square technique
  • Familiarity with the standard form of a circle's equation
  • Basic algebraic manipulation skills
NEXT STEPS
  • Practice completing the square with different quadratic equations
  • Learn how to derive the standard form of a circle's equation from general form
  • Explore applications of circle equations in coordinate geometry
  • Study transformations of conic sections
USEFUL FOR

Students, educators, and anyone interested in mastering algebraic methods for solving geometric problems, particularly in the context of circles and conic sections.

mathdad
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Determine the center and the radius of circle.

x^2 + y^2 - 10x + 2y + 17 = 0

Can this be done using completing the square?
 
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RTCNTC said:
Determine the center and the radius of circle.

x^2 + y^2 - 10x + 2y + 17 = 0

Can this be done using completing the square?
Yes! Write the equation in the form $(x^2 - 10x +\ ?) + (y^2 + 2y +\ ?) =\ ?$ (choosing the queries so as to complete the squares), and you should be able to read off the answer.
 
Opalg said:
Yes! Write the equation in the form $(x^2 - 10x +\ ?) + (y^2 + 2y +\ ?) =\ ?$ (choosing the queries so as to complete the squares), and you should be able to read off the answer.

I got it.
 

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