document.write( "Question 189976: factor the pollynomial completely
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document.write( "x3+5x2-8x-40 \n" );
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Algebra.Com's Answer #142562 by Alan3354(69443) You can put this solution on YOUR website! factor the pollynomial completely \n" ); document.write( "x3+5x2-8x-40 \n" ); document.write( "------------ \n" ); document.write( "In a classroom, these are always integers. \n" ); document.write( "Look at the 40 - a zero will be a factor of 40. \n" ); document.write( "Try (+ and minus) 1, 2, 4 and 5. f(-5) = 0, so (x+5) is a factor. \n" ); document.write( "Once you divide by (x+5), it's only a 2nd order, easy to factor further, if possible. \n" ); document.write( "-------------- \n" ); document.write( "Another approach is to graph the function and look for zeroes. \n" ); document.write( "dl the free software at \r \n" ); document.write( "\n" ); document.write( "www.padowan.dk.com/graph/ \n" ); document.write( " \n" ); document.write( " |