document.write( "Question 985475: 1. Find k so that x+5 is a factor of x^3+5x^2-kx-20.
\n" ); document.write( "2. Find k so that x-7 is a factor of x^3-4x^2-kx-14.
\n" ); document.write( "3. Find k so that x+9 is a factor if x^3+kx^2+3x-54. \n" ); document.write( "
Algebra.Com's Answer #606311 by Edwin McCravy(20056)\"\" \"About 
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document.write( "3. Find k so that x+9 is a factor if x^3+kx^2+3x-54.\r\n" );
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document.write( "Change sign of +9 in k+9 to -9.  Do synthetic division:\r\n" );
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document.write( "-9 | 1    k       3      -54\r\n" );
document.write( "   |     -9  -9k+81  81k-756\r\n" );
document.write( "     1  k-9  -9k+84  81k-810\r\n" );
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document.write( "Set remainder 81k-810 = 0\r\n" );
document.write( "                  81k = 810\r\n" );
document.write( "                    k = 10\r\n" );
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document.write( "The others are done the same way.\r\n" );
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document.write( "Edwin
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