Center , radius (r) = 2 units.
The equation of a circle with center and radius r units is . (Substitute )
(Product of two same signs is positive)
(Evaluate powers: )
The equation of the circle is .
![\"\"](\"http://www.mathskey.com/userfiles/image/steps_images/step1.JPG\")
![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=7339376d836c269112fd6545369b2f87.png\")
, radius (r) = 2 units.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=56a869f6931696226851eed913b629a2.png\")
and radius r units is ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=dfeb4efd759ee756bb8a1b0262ef8a44.png\")
.![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=e9e4804f0256335d003f48ade4de940a.png\")
(Substitute ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=397b36ad427af34e0bfc3d8aaeab189c.png\")
)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=0f37d4675697cf3d59b552eb64cf8d74.png\")
(Product of two same signs is positive)![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2282bab626ea8ad812e3a80bcdca173a.png\")
(Evaluate powers: ![\"\"](\"/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=c7bc4e393fe7b67674a384ccef6b7d17.png\")
)![\"\"](\"/userfiles/image/steps_images/solution.JPG\")
![\"\"](\"http://www.mathskey.com/test/fckeditor/editor/plugins/fckeditor_wiris/integration/showimage.php?formula=2282bab626ea8ad812e3a80bcdca173a.png\")
.