document.write( "Question 423692: evaluate the expression i^85 \n" ); document.write( "

Algebra.Com's Answer #295436 by Alan3354(69443) $\"\"$ $\"About$

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$\"i%5E85+=+i\"$
\n" ); document.write( "--------------
\n" ); document.write( " $\"i%5E1+=+i\"$
\n" ); document.write( " $\"i%5E2+=+-1\"$
\n" ); document.write( " $\"i%5E3+=+-i\"$
\n" ); document.write( " $\"i%5E4+=+1\"$
\n" ); document.write( " $\"i%5E5+=+i\"$
\n" ); document.write( " $\"i%5E6+=+-1\"$
\n" ); document.write( " $\"i%5E7+=+-i\"$
\n" ); document.write( " $\"i%5E8+=+1\"$
\n" ); document.write( "It repeats each 4th cycle.
\n" ); document.write( " $\"i%5E85+=+i%5E%2821%2A4+%2B+1%29+=+i%5E1+=+i\"$
\n" ); document.write( " \n" ); document.write( "

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