document.write( "Question 712580: roots of z^4=-2 \n" ); document.write( "
Algebra.Com's Answer #438103 by Alan3354(69443)\"\" \"About 
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roots of z^4=-2
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\n" ); document.write( "z^4 = 2cis(180)
\n" ); document.write( "\"z+=+root%284%2C2%29cis%2845%29\"
\n" ); document.write( "And cis(135), cis(225), cis(315)\r
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