document.write( "Question 493986: Find the center and radius of the circle.
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document.write( "64x2 + 64y2 + 16x + 128y + 1 = 0 \n" );
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Algebra.Com's Answer #335787 by lwsshak3(11628)![]() ![]() ![]() You can put this solution on YOUR website! Find the center and radius of the circle \n" ); document.write( "64x2 + 64y2 + 16x + 128y + 1 = 0 \n" ); document.write( "Complete the squares \n" ); document.write( "64(x^2+x/4+1/64)+64(y^2+2y+1)=-1+1+64=64 \n" ); document.write( "64(x+1/8)^2+64(y+1)^2=64 \n" ); document.write( "(x+1/8)^2+(y+1)^2=1 \n" ); document.write( "This is an equation of a circle of standard form: (x-h)^2+(y-k)^2=r^2, (h,k) being the coordinates of the center and r=radius \n" ); document.write( "Center: (-1/8, -1) \n" ); document.write( "Radius=1 \n" ); document.write( " |