document.write( "Question 909077: \"f%28x%29+=+x%5E3+%2B6x%5E2+%2B+kx+-4+\"\r
\n" ); document.write( "\n" ); document.write( "For what value of k will it have the same remainder when it is divided by both x - 1 and x + 2?\r
\n" ); document.write( "\n" ); document.write( "My attempt:
\n" ); document.write( "\"%281%29%5E3+%2B6%281%292+%2B+k%281%29+-+4+=+%28-2%29%5E3+%2B6%28-2%29%5E2+%2B+k%28-2%29+-4\"\r
\n" ); document.write( "\n" ); document.write( "\"+3+%2B+k+=+12+-+2k+\"
\n" ); document.write( "\"9+%2B+k+=+-2k\"
\n" ); document.write( "\"9+=+-1k\"
\n" ); document.write( "\"+k+=+-9\"\r
\n" ); document.write( "\n" ); document.write( "Apparently that's not the right answer. \r
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Algebra.Com's Answer #551562 by Theo(13342)\"\" \"About 
You can put this solution on YOUR website!
the answer is k = 3.\r
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\n" ); document.write( "\n" ); document.write( "I used synthetic division to sollve for the remaindder.\r
\n" ); document.write( "\n" ); document.write( "the details of the arithmetic are shown below.
\n" ); document.write( "look below the details for further comments.\r
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\n" ); document.write( "\n" ); document.write( "\"$$$\"\r
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\n" ); document.write( "\n" ); document.write( "step 1:\r
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\n" ); document.write( "\n" ); document.write( "for factor of (x-1), use synthetic division by 1.\r
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\n" ); document.write( "\n" ); document.write( "step 2:\r
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\n" ); document.write( "\n" ); document.write( "for factor of (x+2), use synthetic division by -2.\r
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\n" ); document.write( "\n" ); document.write( "setp 3:\r
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\n" ); document.write( "\n" ); document.write( "set remainder from step 1 equal to remainder from step 2 and solve for k.\r
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