document.write( "Question 1113622: Find all the roots of p(x)=x^4+4x^3-x^2-16x-12 \n" ); document.write( "

Algebra.Com's Answer #728686 by ikleyn(52778) $\"\"$ $\"About$

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document.write( "Plot y = \r\n" );
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document.write( "The roots are -3, -2, -1 and 2.\r\n" );
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document.write( "You can check it manually.\r\n" );
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document.write( "The rational root theorem says that the rational / integer roots are anomg the divisors of the constant term \"-12\",\r\n" );
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document.write( "and voila: they all are there !  The plot visualizes them momentarily !\r\n" );
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