document.write( "Question 948047: find the real solutions of the equation. x^(2/5)-3x^(1/5)-4=0 \n" ); document.write( "
Algebra.Com's Answer #802108 by greenestamps(13200)\"\" \"About 
You can put this solution on YOUR website!


\n" ); document.write( "And yet another hasty, careless, and incorrect response from tutor @CubeyThePenguin.

\n" ); document.write( "You can introduce a dummy variable, as he does in his response, to help solve the problem if you want; it is not necessary.

\n" ); document.write( "\"x%5E%282%2F5%29-3x%5E%281%2F5%29-4+=+0\"
\n" ); document.write( "\"%28x%5E%281%2F5%29-4%29%28x%5E%281%2F5%29%2B1%29+=+0\"
\n" ); document.write( "\"x%5E%281%2F5%29=4\" or \"x%5E%281%2F5%29+=+-1\"
\n" ); document.write( "\"x+=+4%5E5+=+1024\" or \"x+=+%28-1%29%5E5+=+-1\"

\n" ); document.write( "The x = -1 solution is NOT extraneous; it satisfies the original equation.

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