document.write( "Question 595295: 2x^3-5x+4=0\r
\n" );
document.write( "
\n" );
document.write( "\n" );
document.write( "can you please explain to me step by step how to use the rational root theorem for the equation and then find any actual rational roots ? \n" );
document.write( "
Algebra.Com's Answer #377206 by richard1234(7193)![]() ![]() You can put this solution on YOUR website! The possible rational roots are\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "where p is a factor of 4 and q is a factor of 2. Hence, the only possible rational roots are +/- 4, 2, 1, 1/2, 1/4. None of these work, so there are no rational roots.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "Turns out that the only real root is x = -1.8868... \n" ); document.write( " |