document.write( "Question 1018485: Please show how to solve the following polynomial equations:\r
\n" ); document.write( "\n" ); document.write( " $\"+x%5E4+-+2x%5E2+%2B+1+=+0+\"$ by subbing y= x^2\r
\n" ); document.write( "\n" ); document.write( "and \r
\n" ); document.write( "\n" ); document.write( " $\"+sqrt%28x%29+-+%288%29+root%284%2Cx%29+%2B+7+\"$ \r
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Algebra.Com's Answer #634561 by ikleyn(52835) $\"\"$ $\"About$

You can put this solution on YOUR website!
.
\n" ); document.write( "Please show how to solve the following polynomial equations:\r
\n" ); document.write( "\n" ); document.write( " $\"+x%5E4+-+2x%5E2+%2B+1+=+0+\"$ by subbing y= x^2\r
\n" ); document.write( "\n" ); document.write( "and \r
\n" ); document.write( "\n" ); document.write( " $\"+sqrt%28x%29+-+%288%29+root%284%2Cx%29+%2B+7+\"$ \r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Thank you
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document.write( "1.\r\n" );
document.write( " = .  --->\r\n" );
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document.write( "Factor left side:\r\n" );
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document.write( " = ,  --->\r\n" );
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document.write( " = ,  --->  \r\n" );
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document.write( "The roots are x = 1 of multiplicity 2  and  x = -1 of multiplicity 2.\r\n" );
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document.write( "So it is solved.\r\n" );
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document.write( "Another way is to introduce new variable y = . The you get your equation for y in the form\r\n" );
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document.write( " = .\r\n" );
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document.write( "Again, factor left side\r\n" );
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document.write( " = ,\r\n" );
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document.write( "and so on . . . You will get the same answer.\r\n" );
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document.write( "2. Regarding your second equation . . . \r\n" );
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document.write( "   There is a mistake in your writing, so fix (repair) it, and then resubmit.\r\n" );
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