document.write( "Question 968367: Find the solution to the polynomial inequality x^3+5x^2-4x-20>0\r
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document.write( "thanks:) \n" );
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Algebra.Com's Answer #591750 by lwsshak3(11628)![]() ![]() ![]() You can put this solution on YOUR website! Find the solution to the polynomial inequality x^3+5x^2-4x-20>0 \n" ); document.write( "*** \n" ); document.write( "use rational roots theorem with synthetic division\r \n" ); document.write( "\n" ); document.write( "...0...|.....1......5......-4......-20...... \n" ); document.write( "...1...|.....1......6.......2......-18. \n" ); document.write( "...2...|.....1......7......10.......0 (2 is a root) \n" ); document.write( "f(x)=(x-2)(x^2+7x+10)=(x-2)(x+5)(x+2)>0 \n" ); document.write( "number line: \n" ); document.write( "<....-....-5.....+.....-2.....-.....2.....+......> \n" ); document.write( "solution: (-5, -2) U (2, ∞) \n" ); document.write( " |