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Mathematics 13 Online
OpenStudy (k_lynn):

http://prntscr.com/866akv Simplify...

OpenStudy (mathstudent55):

Assuming all variables are non-negative. \(\large \sqrt{200xyz^3} \)

OpenStudy (anonymous):

10 sqrt(2) x y z^3

OpenStudy (michele_laino):

hint: \[\Large 200 = 2 \cdot 100 = 2 \cdot 4 \cdot 25 = 2 \cdot {\left( {2 \cdot 5} \right)^2}\]

OpenStudy (mathstudent55):

\(\large \sqrt{200xyz^3} \) \( \large = \sqrt{2 \times 100xyz^2z} \)

OpenStudy (k_lynn):

I'm not understanding any of that :/

OpenStudy (mathstudent55):

\(\sqrt{100} = 10\) and \(\sqrt {z^2} = z\)

OpenStudy (k_lynn):

\[2z \sqrt{10xyz}\] Would it be this then?

OpenStudy (mathstudent55):

When you simplify a square root, you need to break up the numbers and variables inside the root into products in which one factor is a square.

OpenStudy (mathstudent55):

\(\large =10z\sqrt{2xyz} \)

OpenStudy (mathstudent55):

You're on the right track, but it's the 10 that comes out and the 2 is left inside.

OpenStudy (k_lynn):

ohh so \[10z \sqrt{2xyz}\]

OpenStudy (mathstudent55):

Yes.

OpenStudy (k_lynn):

Okie doke. Thanks!

OpenStudy (mathstudent55):

For example, we broke up 200 into 2 * 100. 100 is the largest factor of 200 that is a perfect square.

OpenStudy (mathstudent55):

You're welcome.

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