document.write( "Question 962416: How to solve x^2+4kx-k by completing the square
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Algebra.Com's Answer #588020 by rothauserc(4718)![]() ![]() You can put this solution on YOUR website! x^2 +4kx -k = 0 \n" ); document.write( "x^2 +4kx = k \n" ); document.write( "x^2 +4kx +4k^2 = k +4k^2 \n" ); document.write( "(x +2k)^2 = k +4k^2 \n" ); document.write( "x+2k = sqrt(k+4k^2) \n" ); document.write( "x+2k = sqrt(k(1+4k)) \n" ); document.write( "x+2k = sqrt(k) * sqrt(1+4k) \n" ); document.write( "x = sqrt(k) * sqrt(1+4k) - 2k \n" ); document.write( " \n" ); document.write( " |