document.write( "Question 813717: Please help me Write the equation in standard form for a hyperbola centered at (h,k) and identify the center and vertices.\r
\n" ); document.write( "\n" ); document.write( "x2 - 2x - y2 + 2y = 4\r
\n" ); document.write( "\n" ); document.write( "Thank you so much!
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Algebra.Com's Answer #489953 by lwsshak3(11628)\"\" \"About 
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Write the equation in standard form for a hyperbola centered at (h,k) and identify the center and vertices.
\n" ); document.write( "x2 - 2x - y2 + 2y = 4
\n" ); document.write( "***
\n" ); document.write( "complete the square:
\n" ); document.write( "(x^2-2x+1)-(y^2-2y+1)=4+1-1
\n" ); document.write( "(x-1)^2-(y-1)^2=4
\n" ); document.write( "(x-1)^2/4-(y-1)^2/4=1
\n" ); document.write( "Given hyperbola has a horizontal transverse axis.
\n" ); document.write( "Its standard form of equation: \"%28x-h%29%5E2%2Fa%5E2-%28y-k%29%5E2%2Fb%5E2=1\"
\n" ); document.write( "center: (1,1)
\n" ); document.write( "a^2=4
\n" ); document.write( "a=2
\n" ); document.write( "vertices: (1±a,1)=(1±2,1)=(-1,1) and (3,1)
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