document.write( "Question 998849: x^2+y^2-4y+4=100\r
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Algebra.Com's Answer #616584 by MathLover1(20850)\"\" \"About 
You can put this solution on YOUR website!
\"x%5E2%2By%5E2-4y%2B4=100\"......this is equation of a circle; so, standard formula is \"%28x-h%29%5E2%2B%28y-k%29%5E2=r%5E2\" where \"h\" and \"k\" are \"x\" and \"y\" coordinates of the center, and \"r\" is a radius\r
\n" ); document.write( "\n" ); document.write( "\"x%5E2%2B%28y%5E2-4y%2B4%29=100\"...complete square\r
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\n" ); document.write( "\n" ); document.write( "\"x%5E2%2B%28y%5E2-4y%2B2%5E2%29=100\"\r
\n" ); document.write( "\n" ); document.write( "\"x%5E2%2B%28y-2%29%5E2=100\" or,\r
\n" ); document.write( "\n" ); document.write( "\"%28x-0%29%5E2%2B%28y-2%29%5E2=100\"\r
\n" ); document.write( "\n" ); document.write( "so, you have \"h=0\",\"k=2\", and \"r=10\"\r
\n" ); document.write( "\n" ); document.write( "center: at (\"0\",\"2\")\r
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