document.write( "Question 414332: one root of the quadratic equation x2-kx+8=0 is negative of the other. the value of k is \n" ); document.write( "
Algebra.Com's Answer #290634 by Theo(13342)\"\" \"About 
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your equation is x^2 - kx + 8 = 0\r
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\n" ); document.write( "\n" ); document.write( "unless i completely misunderstand what you are asking for, there is no solution to this equation as far as i can see.\r
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\n" ); document.write( "\n" ); document.write( "if one root is the negative of the other root, then you can never get a positive constant value in the equation.\r
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\n" ); document.write( "\n" ); document.write( "the only way one root could be the negative of the other is if the roots were equal with opposite signs.\r
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\n" ); document.write( "\n" ); document.write( "if the roots were equal, then they would each have to be equal to square root of 8 because the square root of 8 times the square root of 8 equals 8.\r
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\n" ); document.write( "\n" ); document.write( "for one of the roots to be a negative of the other, then:\r
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\n" ); document.write( "\n" ); document.write( "one of the roots would have to be plus the square root of 8.
\n" ); document.write( "the other root would have to be minus the square root of 8.\r
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\n" ); document.write( "\n" ); document.write( "plus the square root of 8 times minus the square root of 8 would result in minus 8.\r
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\n" ); document.write( "\n" ); document.write( "but you want them to be equal to plus 8.\r
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\n" ); document.write( "\n" ); document.write( "can't be done.\r
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