document.write( "Question 201628: Dear tutor,I 've checked one of the problems which was like my question but I couldn't mach the answer with mine.could you help me in this way ?
\n" ); document.write( "Choose the answer Of $\"x%5E4%2B1%2Fx%5E4\"$ if $\"x%2B1%2Fx=8\"$ :
\n" ); document.write( "a.) $\"8%5E4\"$
\n" ); document.write( "b.) $\"8%5E4%2B2%5E8\"$
\n" ); document.write( "c.) $\"8%5E4%2B2%5E8-2\"$
\n" ); document.write( "d.) $\"8%5E4%2B2\"$
\n" ); document.write( "e.) $\"8%5E4-2%5E8%2B2\"$ \n" ); document.write( "

Algebra.Com's Answer #151849 by RAY100(1637) $\"\"$ $\"About$

You can put this solution on YOUR website!
x + 1/x =8
\n" ); document.write( "(x^2 +1 ) / x =8
\n" ); document.write( "x^2 +1 = 8x
\n" ); document.write( "x^2 -8x +1 =0
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\n" ); document.write( "using quadratic eqn,, x= 7.873,,.127
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\n" ); document.write( "substitute either in
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\n" ); document.write( "X^4 +(1/x^4) = 3842
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\n" ); document.write( "checking answers, this matches (E) (8^4 -2^8 +2) \n" ); document.write( "

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