SOLUTION: I'm really having a tough time with this problem, can you help me? here is the problem: {{{6sqrt(12)}}}-{{{8sqrt(50)}}}+{{{9sqrt(72)}}} I rewrote it using prime factorization

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Question 993752: I'm really having a tough time with this problem, can you help me?
here is the problem:
-+
I rewrote it using prime factorization and got this:
-+
I simplified to this:
-+
I tried to solve this and got + but the answer key shows the answer as: - Can you tell me how they got that?
Found 2 solutions by Alan3354, MathTherapy:
Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
I'm really having a tough time with this problem, can you help me?
here is the problem:
-+
I rewrote it using prime factorization and got this:
-+
I simplified to this:
-+
I tried to solve this and got + but the answer key shows the answer as: - Can you tell me how they got that?
===============================
The answer key is wrong. It doens't happen often, but it does.
---------
Your answer is correct.
Answer by MathTherapy(10552)   (Show Source): You can put this solution on YOUR website!
I'm really having a tough time with this problem, can you help me?
here is the problem:
-+
I rewrote it using prime factorization and got this:
-+
I simplified to this:
-+
I tried to solve this and got + but the answer key shows the answer as: - Can you tell me how they got that? 
Your answer is correct.

For the answer key to be correct, the problem would have to be: -+, as opposed to: -+

It may've been , and not . Check the problem!! Maybe you copied it incorrectly! 

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