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Mathematics 8 Online
OpenStudy (anonymous):

Stupid Question

OpenStudy (anonymous):

I cant seem to understand this^

OpenStudy (anonymous):

which part do you understand up to?

OpenStudy (anonymous):

x= 16 (21

OpenStudy (anonymous):

The square root of 336 is 18...

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

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?

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

OpenStudy (anonymous):

Ohhh

OpenStudy (anonymous):

Do you get it?

OpenStudy (anonymous):

yep

OpenStudy (anonymous):

Then do \[\sqrt{48}\]

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