document.write( "Question 1038352: How to find a if x-2 is a factor of 2x^3-6x^2+5x+a \n" ); document.write( "
Algebra.Com's Answer #653031 by Edwin McCravy(20055)![]() ![]() You can put this solution on YOUR website! \r\n" ); document.write( "x-2 is to be a factor of 2x³-6x²+5x+a\r\n" ); document.write( "\r\n" ); document.write( "We divide either by long division or by synthetic division:\r\n" ); document.write( "and set the remainder = 0\r\n" ); document.write( "\r\n" ); document.write( "By long division: By synthetic division\r\n" ); document.write( "\r\n" ); document.write( " 2x²-2x+1 2|2 -6 5 a\r\n" ); document.write( "x-2)2x³-6x²+5x+a | 4 -4 2\r\n" ); document.write( " 2x³-4x² 2 -2 1 a+2\r\n" ); document.write( " -2x²+5x\r\n" ); document.write( " -2x²+4x\r\n" ); document.write( " x+a\r\n" ); document.write( " x-2\r\n" ); document.write( " a+2\r\n" ); document.write( "\r\n" ); document.write( "Either way, the remainder is a+2.\r\n" ); document.write( "We want the remainder to be 0.\r\n" ); document.write( "So we set a+2 = 0\r\n" ); document.write( " a = -2\r\n" ); document.write( "\r\n" ); document.write( "Edwin\n" ); document.write( " |