document.write( "Question 514401: Determine whether or not the equation has a circle in it's graph
\n" ); document.write( "4x^2+4y^2-24x-40y+36=0
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Algebra.Com's Answer #343406 by stanbon(75887)\"\" \"About 
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Determine whether or not the equation has a circle in it's graph
\n" ); document.write( "4x^2+4y^2-24x-40y+36=0
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\n" ); document.write( "Divide thru by 4 to get:
\n" ); document.write( "x^2-6x + y^2-10y = -36
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\n" ); document.write( "Complete the square on the x and on the y terms:
\n" ); document.write( "x^2-6x+9 + y^2-10y+25 = -36+9+25
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\n" ); document.write( "(x-3)^2 + (y-5)^2 = -2
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\n" ); document.write( "Not a circle because radius would be sqrt(-2) = i*sqrt(2)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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