document.write( "Question 743526: z^4-9=0 I need four answers! \n" ); document.write( "
Algebra.Com's Answer #452919 by Edwin McCravy(20055)\"\" \"About 
You can put this solution on YOUR website!
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document.write( "            z4 - 9 = 0  \r\n" );
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document.write( "        (z2)2 - 32 = 0\r\n" );
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document.write( "  (z2 - 3)(z2 + 3) = 0\r\n" );
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document.write( "z2 - 3 = 0;   z2 + 3 = 0\r\n" );
document.write( "    z2 = 3;       z2 = -3\r\n" );
document.write( "     z = ±√3;      z = ±√-3\r\n" );
document.write( "                   z = ±i√3\r\n" );
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document.write( "Four answers √3, -√3, i√3, -i√3\r\n" );
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document.write( "Edwin
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