document.write( "Question 166626: Can someone help me with the question:\r
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document.write( "Use the rational zeros theorem to list all possible rational zeros of P(x)=3x^3-5x^2+4x-2.\r
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document.write( "Thank you. \n" );
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Algebra.Com's Answer #122805 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! Use the rational zeros theorem to list all possible rational zeros of P(x)=3x^3-5x^2+4x-2. \n" ); document.write( "------------------ \n" ); document.write( "Since the coefficients add to zero, x=1 is a root. \n" ); document.write( "------- \n" ); document.write( "Use synthetic division to find the other roots: \n" ); document.write( "1)....3....-5,,,,4....-2 \n" ); document.write( "........3....-2...2...|..0\r \n" ); document.write( "\n" ); document.write( "================================= \n" ); document.write( "Quotient: 3x^2-2x+2 \n" ); document.write( "Remainder: 0 \n" ); document.write( "================================= \n" ); document.write( "Find the zeroes of the Remainder, 3x^2 -2x + 2: \n" ); document.write( "x = [2 +- sqrt(4 - 4*3*2)]/(2*3) \n" ); document.write( "x = [2 +- sqrt(4 - 24)]/6 \n" ); document.write( "x = [2 +- sqrt(-20)]/6 \n" ); document.write( "These are not rational zeroes. \n" ); document.write( "The only rational zero is x=1 \n" ); document.write( "================================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " |