document.write( "Question 866355: Find the equation of the circle with radius 1 and center C(1, -2). Then sketch its graph\r
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\n" ); document.write( "\n" ); document.write( "Find the equation of the circle that passes through the point P(8, -2) and whose center is the point C(4, 1). Then sketch its graph\r
\n" ); document.write( "\n" ); document.write( "Find the equation of the circle for which a diameter has endpoints P1(-1, 4) and P2(-5, 2)
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Algebra.Com's Answer #522239 by ewatrrr(24785)\"\" \"About 
You can put this solution on YOUR website!

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\n" ); document.write( "(x-1)^2 + (y+2)^2 = 1 (r^2)
\n" ); document.write( "(x-4)^2 + (y-1)^2 = 5^2 r^2 = (-3)^2 + 4^2 = 25
\n" ); document.write( "(x+3)^2 + (y-3)^2 = 20 M = (-3,3) r^2 = 2^2+ 4^2 = 20
\n" ); document.write( "Use:
\n" ); document.write( "D = \"sqrt+%28%28x%5B1%5D-x%5B2%5D%29%5E2%2B%28y%5B1%5D-y%5B2%5D%29%5E2%29%29\"
\n" ); document.write( "Midpoint Pt(x,y): ( \"%28x%5B1%5D+%2B+x%5B2%5D%29%2F2\", \"%28y%5B1%5D+%2B+y%5B2%5D%29%2F2++%29\")
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