document.write( "Question 301529: Is 4x^2-y^2+8x-4y-4=0 is a hyperbola? \n" ); document.write( "
Algebra.Com's Answer #216201 by Alan3354(69443)\"\" \"About 
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Yes, it is.
\n" ); document.write( "The signs of the x^2 and y^2 terms are different --> hyperbola
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