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Mathematics
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http://img543.imageshack.us/img543/1751/screenshot20120530at947.png
I cant seem to understand this^
which part do you understand up to?

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Other answers:

x= 16 (21
The square root of 336 is 18...
?? anyone lol?
The square root of 336 isn't 18 o-o
!?!??!
18 x 18= 324
18.3
That's if you enter it in your calculator. \[4\sqrt{21}\]is the radical form of it. Also, 18.3 is rounded, so it's less accurate
Do you know how to simplify it so that it turns into the radical form?
No, and I dont have time, Im reviewing for a test tomrrow.
The answer is 18.3 watever right?
They just did the rest to show you a diferent way?
It's actually the standard way...
Have you done this in class?
Yeah like a thousands times.. I was just confused on how they did it in the textbook.
Alright. So we want to divide the number by a perfect square,right? Like when \[\sqrt{18}=\sqrt{9\times2}\]
We know that\[\sqrt{9}=3 \]so the equation turns into \[3\sqrt{2}\], leaving the 2 because it's not a perfect square and it cannot be divided more times to make a perfect square
Ohhh
Do you get it?
yep
Then do \[\sqrt{48}\]

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