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!
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document.write( "Directions: Solve the equation by making an appropriate substitution. \r
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document.write( "4.) \r
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document.write( "2x-11√x- 40=0 \r
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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. \n" );
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Algebra.Com's Answer #257656 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! \n" ); document.write( "You can sub y for sqrt(x) \n" ); document.write( " \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 \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |