document.write( "Question 3424: If one root of the equation 2x2 + 3x – k = 0 is 6, what is the value of k?
\n" ); document.write( "(A) 90
\n" ); document.write( "(B) 42
\n" ); document.write( "(C) 18
\n" ); document.write( "(D) 10
\n" ); document.write( "(E) –10
\n" ); document.write( "
\n" ); document.write( "

Algebra.Com's Answer #1505 by davidananikian(2)\"\" \"About 
You can put this solution on YOUR website!
If one root of the equation 2x2 + 3x – k = 0 is 6, what is the value of k?
\n" ); document.write( "Find k: substitute x=6
\n" ); document.write( "2*6^2+3*6-k=0
\n" ); document.write( "90-k=0
\n" ); document.write( "k=90\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" ); document.write( "
\n" );