document.write( "Question 1048295: if f(x^2 +1)=x^4+5x^2+3. what is f(x^2 -1) \n" ); document.write( "

Algebra.Com's Answer #663923 by ikleyn(52781) $\"\"$ $\"About$

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\n" ); document.write( "if f(x^2 +1)=x^4+5x^2+3. what is f(x^2 -1)
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document.write( "My goal now is to present the polynomial in the right side,  ,  as a function (as a polynomial) of the argument  .  \r\n" );
document.write( "We have\r\n" );
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document.write( " =  +  =  +  -   = .\r\n" );
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document.write( "Thus   = .\r\n" );
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document.write( "      So, if I introduce new variable u = , then f(u) = .\r\n" );
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document.write( "Therefore,  =  =  = .\r\n" );
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document.write( "Answer.  If   = ,  then   =  = .\r\n" );
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