document.write( "Question 43667: Give the equation for the circle with center C(3,-2) and radius 4. Thanks! \n" ); document.write( "
Algebra.Com's Answer #28660 by AnlytcPhil(1806)\"\" \"About 
You can put this solution on YOUR website!
Give the equation for the circle with center\r\n" );
document.write( " C(3,-2) and radius 4. Thanks!\r\n" );
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document.write( "You just have to learn the equation\r\n" );
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document.write( "(x-h)² + (y-k)² = r²\r\n" );
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document.write( "Where the center = (h,k) = (3,-2)\r\n" );
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document.write( "Substitute 3 for h and -2 for k and 4 for the radius r.\r\n" );
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document.write( "Then you have\r\n" );
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document.write( "(x-3)² + (y-(-2))² = 4²\r\n" );
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document.write( "You can simplify\r\n" );
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document.write( "(x-3)² + (y+2)² = 16\r\n" );
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document.write( "And you can multiply it out if you like\r\n" );
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document.write( "(x-3)(x-3) + (y+2)(y+2) = 16\r\n" );
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document.write( "x² - 3x + 9 + y² + 4y + 4 = 16\r\n" );
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document.write( "x² + y² - 3x + 4y + 13 = 16\r\n" );
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document.write( "x² + y² - 3x + 4y - 3 = 0\r\n" );
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document.write( "Edwin
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