document.write( "Question 993752: I'm really having a tough time with this problem, can you help me?
\n" ); document.write( "here is the problem:
\n" ); document.write( " $\"6sqrt%2812%29\"$ - $\"8sqrt%2850%29\"$ + $\"9sqrt%2872%29\"$ \r
\n" ); document.write( "\n" ); document.write( "I rewrote it using prime factorization and got this:
\n" ); document.write( " $\"6%2A2sqrt%283%29\"$ - $\"8%2A5sqrt%282%29\"$ + $\"9%2A3%2A2sqrt%282%29\"$ \r
\n" ); document.write( "\n" ); document.write( "I simplified to this:
\n" ); document.write( " $\"12sqrt%283%29\"$ - $\"40sqrt%282%29\"$ + $\"54sqrt%282%29\"$ \r
\n" ); document.write( "\n" ); document.write( "I tried to solve this and got $\"12sqrt%283%29\"$ + $\"14sqrt%282%29\"$ but the answer key shows the answer as: $\"57sqrt%283%29\"$ - $\"40sqrt%282%29\"$ Can you tell me how they got that? \n" ); document.write( "

Algebra.Com's Answer #612956 by Alan3354(69443) $\"\"$ $\"About$

You can put this solution on YOUR website!
I'm really having a tough time with this problem, can you help me?
\n" ); document.write( "here is the problem:
\n" ); document.write( " $\"6sqrt%2812%29\"$ - $\"8sqrt%2850%29\"$ + $\"9sqrt%2872%29\"$ \r
\n" ); document.write( "\n" ); document.write( "I rewrote it using prime factorization and got this:
\n" ); document.write( " $\"6%2A2sqrt%283%29\"$ - $\"8%2A5sqrt%282%29\"$ + $\"9%2A3%2A2sqrt%282%29\"$ \r
\n" ); document.write( "\n" ); document.write( "I simplified to this:
\n" ); document.write( " $\"12sqrt%283%29\"$ - $\"40sqrt%282%29\"$ + $\"54sqrt%282%29\"$ \r
\n" ); document.write( "\n" ); document.write( "I tried to solve this and got $\"12sqrt%283%29\"$ + $\"14sqrt%282%29\"$ but the answer key shows the answer as: $\"57sqrt%283%29\"$ - $\"40sqrt%282%29\"$ Can you tell me how they got that?
\n" ); document.write( "===============================
\n" ); document.write( "The answer key is wrong. It doens't happen often, but it does.
\n" ); document.write( "---------
\n" ); document.write( "Your answer is correct. \n" ); document.write( "

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