document.write( "Question 370649: if x^2+1/x^2=38, find x^4+1/x^4 \n" ); document.write( "
Algebra.Com's Answer #264222 by robertb(5830)\"\" \"About 
You can put this solution on YOUR website!
\"x%5E2%2B1%2Fx%5E2=38\". Square both sides to get\"x%5E4+%2B+2%2A%28x%5E2%29%2A%281%2Fx%5E2%29+%2B+1%2Fx%5E4+=+1444\".
\n" ); document.write( "\"x%5E4+%2B+2+%2B+1%2Fx%5E4+=+1444\",
\n" ); document.write( "or \"x%5E4++%2B+1%2Fx%5E4+=+1442\".
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