document.write( "Question 1136663: b=a+c, than the equation ax2+bx+c=0 has\r
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document.write( "a) real root b)no real root c) equal root d) no root \n" );
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Algebra.Com's Answer #754466 by Theo(13342)![]() ![]() You can put this solution on YOUR website! it appears tha this will give you real roots. \n" ); document.write( "in fact, it appears that one of the roots will be plus or minus c/a and the other root will be -1.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "here's my worksheet that derives what i think is the answer.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "apparently one of the roots will be -c/a and the other root will be -1.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "i tested this out with various value of b = c + a to see if that was true.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "as far as i can tell, it is.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "i chose to test this against a quadratic solver.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "i chose the following scenarios.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \r\n" ); document.write( "a b c root 1 root 2\r\n" ); document.write( "-5 -25 -20 -4 -1\r\n" ); document.write( "-5 +15 +20 -1 +4\r\n" ); document.write( "+5 -15 -20 -1 +4\r\n" ); document.write( "+5 +25 +20 -4 -1\r\n" ); document.write( "\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "in all of these scenarios, b = a + c.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "one of the roots was -c/a and the other root was -1, as i had derived in the worksheet, confirming that the derivation was correct.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "here's the results from the quadratic solver.\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "your solution is selection (a) real root \n" ); document.write( " |