document.write( "Question 402699: what would be the graph of the equation x^2-1=0
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Algebra.Com's Answer #284812 by sofiyac(983)\"\" \"About 
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add one to each side and you get
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\n" ); document.write( "take square root of each side and you get
\n" ); document.write( "x=1 or x=-1
\n" ); document.write( "so you will have two VERTICAL lines, one at x=1 and one at x=-1
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