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OpenStudy (anonymous):
?? anyone lol?
OpenStudy (anonymous):
The square root of 336 isn't 18 o-o
OpenStudy (anonymous):
!?!??!
OpenStudy (anonymous):
18 x 18= 324
OpenStudy (anonymous):
18.3
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OpenStudy (anonymous):
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
OpenStudy (anonymous):
Do you know how to simplify it so that it turns into the radical form?
OpenStudy (anonymous):
No, and I dont have time, Im reviewing for a test tomrrow.
OpenStudy (anonymous):
The answer is 18.3 watever right?
OpenStudy (anonymous):
They just did the rest to show you a diferent way?
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OpenStudy (anonymous):
It's actually the standard way...
OpenStudy (anonymous):
Have you done this in class?
OpenStudy (anonymous):
Yeah like a thousands times.. I was just confused on how they did it in the textbook.
OpenStudy (anonymous):
Alright. So we want to divide the number by a perfect square,right?
Like when \[\sqrt{18}=\sqrt{9\times2}\]
OpenStudy (anonymous):
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
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