document.write( "Question 740801: What are 4'th roots of -8i \n" ); document.write( "
Algebra.Com's Answer #455500 by tommyt3rd(5050)\"\" \"About 
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-8i = 8 at 270 deg
\n" ); document.write( "n=4
\n" ); document.write( "k=0,1,2,3\r
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\n" ); document.write( "r= 4-th-root(8)at theta=(270)/4=135/2\r
\n" ); document.write( "\n" ); document.write( "k=1:
\n" ); document.write( "r=4-th-root(8) at theta=(270+360)/4=315/2\r
\n" ); document.write( "\n" ); document.write( "k=2:
\n" ); document.write( "r=4-th-root(8) at theta=(270+720)/4=495/2\r
\n" ); document.write( "\n" ); document.write( "k=3:
\n" ); document.write( "r=4-th-root(8) at theta=(270+1080)/4=675/2\r
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