document.write( "Question 891091: find the value of k that makes the sum of the roots of 3x^2-(3k+2)x+18=0 equal to 6. \n" ); document.write( "
Algebra.Com's Answer #539551 by MathTherapy(10552)\"\" \"About 
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find the value of k that makes the sum of the roots of 3x^2-(3k+2)x+18=0 equal to 6.
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\n" ); document.write( "\"3x%5E2+-+%283k+%2B+2%29x+%2B+18+=+0\"\r
\n" ); document.write( "\n" ); document.write( "Sum of roots = \"-+b%2Fa\"
\n" ); document.write( "\"6+=+-+%28-+%283k+%2B+2%29%29%2F3\" ------ Substituting sum of roots value, b and a
\n" ); document.write( "\"6+=+%283k+%2B+2%29%2F3+\"
\n" ); document.write( "3k + 2 = 18 ------- Cross-multiplying
\n" ); document.write( "3k = 16
\n" ); document.write( "\"highlight_green%28highlight_green%28k+=+16%2F3%29%29\" \n" ); document.write( "
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