document.write( "Question 945873: Given that x^2^n=8, find the value of the expression 3x^4^n-x^2^n-2. Thanks for your help. \n" ); document.write( "
Algebra.Com's Answer #576992 by MathLover1(20850)\"\" \"About 
You can put this solution on YOUR website!
\r
\n" ); document.write( "\n" ); document.write( "Given that \"%28x%5E2%29%5En=8\", (at least I guess you have that)\r
\n" ); document.write( "\n" ); document.write( "find the value of the expression \"3%28x%5E4%29%5En-%28x%5E2%29%5E%28n-2%29\" (at least I guess you have that)\r
\n" ); document.write( "\n" ); document.write( "\"%28x%29%5E%282n%29=8\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"3%28x%29%5E%284n%29-%28x%29%5E%282%28n-2%29%29\" \r
\n" ); document.write( "\n" ); document.write( "\"3%28x%29%5E%282n%29%28x%29%5E%282n%29-x%5E%282n-4%29\" \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"3%28x%29%5E%282n%29%28x%29%5E%282n%29-x%5E%282n%29%2Fx%5E4\" ....substitute \"%28x%29%5E%282n%29=8\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"3%2A8%2A8-8%2Fx%5E4\"\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "\"192-8%2Fx%5E4\"
\n" ); document.write( "
\n" ); document.write( "
\n" );