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order of operations on this one?

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by jzw » Fri Feb 24, 2012 1:18 pm
no matter how i slice this one, i still can't seem to get the correct answer. in what order should i be doing the operations?
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by Mike@Magoosh » Fri Feb 24, 2012 3:40 pm
Hi, there. I'm happy to help with this.

I give a complete solution in the attached pdf.

There are some tricky concepts involved here. At Magoosh (https://gmat.magoosh.com/plans), we have well over 200 video lessons explaining all the difficult math & verbal concepts you will need on the GMAT. If you want to learn more about simplifying radicals and multiplying by the conjugate, my recommendation would be check out Magoosh.

Let me know if you have any further questions.

Mike :)
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by tomada » Sat Feb 25, 2012 1:48 pm
Is the answer…6?
I'm really old, but I'll never be too old to become more educated.
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by tomada » Sat Feb 25, 2012 1:49 pm
Is the answer…6?
I'm really old, but I'll never be too old to become more educated.
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by Mike@Magoosh » Sun Feb 26, 2012 11:55 am
tomada

Yes, as it happens, this monstrosity simplifies to 6. See the pdf I posted for the details if you are unclear.

Mike :)
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