document.write( "Question 427260: if x-1/x=2 ,then x8+1/x8=?
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Algebra.Com's Answer #297117 by richard1234(7193) $\"\"$ $\"About$

You can put this solution on YOUR website!
We can square both sides to obtain\r
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\n" ); document.write( "\n" ); document.write( " $\"x%5E2+%2B+%281%2Fx%5E2%29+-+2+=+4\"$ --> $\"x%5E2+%2B+%281%2Fx%5E2%29+=+6\"$ . Square both sides again to get\r
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\n" ); document.write( "\n" ); document.write( " $\"x%5E4+%2B+%281%2Fx%5E4%29+%2B+2+=+36\"$ --> $\"x%5E4+%2B+%281%2Fx%5E4%29+=+34\"$ . Repeat.\r
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\n" ); document.write( "\n" ); document.write( " $\"x%5E8+%2B+%281%2Fx%5E8%29+%2B+2+=+1156\"$ , so $\"x%5E8+%2B+%281%2Fx%5E8%29+=+1154\"$ . \n" ); document.write( "

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