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Mathematics 7 Online
OpenStudy (anonymous):

√2x^3/3x

OpenStudy (anonymous):

I suppose this means \[\frac{ \sqrt{2x^3} }{ 3x }\]

OpenStudy (anonymous):

So you can split up the terms in the equation like this\[\frac{ \sqrt{2xx^2} }{ 3x }\]

OpenStudy (anonymous):

So how can you simplify the square root?

OpenStudy (anonymous):

Well can you take some stuff out of the square root?

OpenStudy (anonymous):

You're close, there's a reason I made it x^2 Can't you take that out?

OpenStudy (anonymous):

Yeah so how can you write that when you take out the x^2?

OpenStudy (anonymous):

Well no,... Let's use an example, what is\[\sqrt{2^2}?\]

OpenStudy (anonymous):

Yup that's right \[\sqrt{2^2}=2\] So following that pattern couldn't we say that \[\sqrt{x^2}=x?\]

OpenStudy (anonymous):

So another way to write\[\frac{ \sqrt{2x}\times \sqrt{x^2} }{ 3x }\]

OpenStudy (anonymous):

Using what I said earlier\[\sqrt{x^2}=x\] So this becomes\[\frac{ \sqrt{2x}\times x }{ 3x }\]

OpenStudy (anonymous):

So the x cancels out in the denominator and the numerator and this becomes\[\frac{ \sqrt{2x} }{ 3 }\]

OpenStudy (anonymous):

Which is the simplest you can get it to

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