document.write( "Question 891099: find the value of k in order to have equal roots of 2x^2-kx+5=0 \n" ); document.write( "

Algebra.Com's Answer #539511 by josgarithmetic(39617) $\"\"$ $\"About$

You can put this solution on YOUR website!
$\"highlight_green%282x%5E2-kx%2B5=0%29\"$ want equal roots, meaning discriminant is 0.\r
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\n" ); document.write( "\n" ); document.write( " $\"%28-k%29%5E2-4%2A2%2A5=0\"$
\n" ); document.write( " $\"k%5E2-40=0\"$
\n" ); document.write( " $\"k%5E2=40\"$
\n" ); document.write( " $\"k=0%2B-+sqrt%282%2A2%2A5%29\"$
\n" ); document.write( " $\"highlight%28k=0%2B-+2sqrt%285%29%29\"$ \r
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\n" ); document.write( "\n" ); document.write( "(The 0 is included only to allow site rendering; otherwise is unnecessary.)
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