document.write( "Question 993552: Z^4-4z^2-5=0
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Algebra.Com's Answer #612788 by josgarithmetic(39620)\"\" \"About 
You can put this solution on YOUR website!
\"v=z%5E2\"\r
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\n" ); document.write( "\n" ); document.write( "How about now? Factorable.
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