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Mathematics 24 Online
OpenStudy (anonymous):

What simplified radical is equivalent to this value?

OpenStudy (anonymous):

what value?

OpenStudy (anonymous):

\[\sqrt{28}\]

OpenStudy (anonymous):

oh 2 sqrt(7)

OpenStudy (anonymous):

\[2\]

OpenStudy (anonymous):

would it be \[4\sqrt{7}\]

OpenStudy (anonymous):

nope 2*2 is 4

OpenStudy (anonymous):

\[2\sqrt{7}\] ?

OpenStudy (anonymous):

when u take the 4 out of the radical, then you have to square root it

OpenStudy (primeralph):

@jessy1289 Hold on. How much math do you readily know?

OpenStudy (anonymous):

lol

OpenStudy (primeralph):

@Jenjop Not joking. Trying to help her learn once and for all.

OpenStudy (anonymous):

hey don't be picking on @jessy1289 she learned a bunch yesterday did quite a few by herself

OpenStudy (primeralph):

@satellite73 You know me better than that.

OpenStudy (anonymous):

steps go like this \[\sqrt{28}=\sqrt{4\times 7}=\sqrt{4}\times \sqrt{7}=2\sqrt{7}\]

OpenStudy (agent0smith):

You can break up the square root like so.\[\Large \sqrt {28} = \sqrt { 4 * 7} = \sqrt 4 \sqrt 7\]

OpenStudy (anonymous):

lol yeah @\('ralph\) i do

OpenStudy (anonymous):

i got it now guys thanks and thank you @satellite73

OpenStudy (primeralph):

@jessy1289 All you have to do is know the basic perfect squares: 2 4 9 16 25 etc and pull them out whenever you see them in the square root.

OpenStudy (mathstudent55):

@primeralph 2 is a perfect square?

OpenStudy (agent0smith):

1 is such a nice perfect square that he listed it twice.

OpenStudy (primeralph):

I'm half awake. |dw:1375413146963:dw|

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