document.write( "Question 361286: Hello! I am working on quadratic equations this week, in my Algebra class (section 11.4, #4). At the current moment I am stumped and totally confused on this one problem we are required to do. Apart of the requirements for completing the assignment is to show every single step on how I got to my answer. I wasn't sure if anyone could help me, but I thought I would post to see who's the master at these type of equations. Thank you so much in advance for all your help!
\n" ); document.write( "Directions: Solve the equation by making an appropriate substitution. \r
\n" ); document.write( "\n" ); document.write( "4.) \r
\n" ); document.write( "\n" ); document.write( "2x-11√x- 40=0 \r
\n" ); document.write( "\n" ); document.write( "the answer the book gives is Answer= {64}, but I don't see how I obtain the answer. Any help you can give is GREATLY appreciated.
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Algebra.Com's Answer #257656 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
\"2x+-+11sqrt%28x%29+-+40+=+0\"
\n" ); document.write( "You can sub y for sqrt(x)
\n" ); document.write( "\"2y%5E2+-+11y+-+40+=+0\"
\n" ); document.write( "(2y+5)*(y-8) = 0
\n" ); document.write( "y = 8
\n" ); document.write( "--> x = 64
\n" ); document.write( "-----------
\n" ); document.write( "2y+5 = 0
\n" ); document.write( "y = -5/2
\n" ); document.write( "-->x = 25/4 This fits if you use the neg root.\r
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