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Mathematics 21 Online
EndersWorld:

Radicals

EndersWorld:

\[\frac{ \sqrt[3]{5x} }{ \sqrt[3]{2x^2} }\]

Shadow:

How do you think you would approach this?

Shadow:

You can do something to get rid of that annoying radical

EndersWorld:

Not sure :thonk:

Shadow:

\[\frac{ \sqrt[3]{5x} }{ \sqrt[3]{2x^2} }\] \[\frac{ \sqrt[3]{5} \times x^{\frac{ 1 }{ 3 }} }{ \sqrt[3]{2} \times x^{\frac{ 2 }{ 3 }}}\] \[\frac{ \sqrt[3]{5} \times x ^{\frac{ 1 }{ 3 } - \frac{ 2 }{ 3 }}}{ \sqrt[3]{2}}\] \[\frac{ \sqrt[3]{5} \times x^{-\frac{ 1 }{ 3 }} }{ \sqrt[3]{2} }\] \[\frac{ \sqrt[3]{5} }{ \sqrt[3]{2} \times x^{1/3}}\]

EndersWorld:

Iโ€™m lost.. (sorry, dozed off..)

EndersWorld:

Iโ€™m confused by what those steps mean.

Shadow:

Which ones

EndersWorld:

I understand 1 and 2 but not after that.

Shadow:

Quotient of Powers: \[\frac{ a^{m} }{ a^{n}} = a^{m - n}\]

Shadow:

Negative Exponent: \[a^{-m} = \frac{ 1 }{ a^{m}}\]

EndersWorld:

Got I hate math... *sigh*

EndersWorld:

I donโ€™t understand any of this... kms

Shadow:

\[\frac{ \sqrt[3]{5} \times x ^{\frac{ 1 }{ 3 } - \frac{ 2 }{ 3 }}}{ \sqrt[3]{2}}\] You don't understand how I got here?

EndersWorld:

No ๐Ÿ˜” but math has never been easy for me ๐Ÿ˜”

Shadow:

I just used the quotient of powers, and then since I got a negative exponent, I moved it down to the denominator.

EndersWorld:

Okay..

Shadow:

Completely ignored the 3rd root of 5 and 2 this whole time. Just focused on the x since there is nothing you can do about the coefficients.

EndersWorld:

Kinda makes sense..

Shadow:

Yeah, just convert them to exponents, separate them from the radicals, do the quotient of powers (division of exponents), subtract, get a negative exponent, do the negative exponent rule by moving it down to the denominator, and you're done.

EndersWorld:

I love the migraine that comes with math..

EndersWorld:

Think I got it.. thankfully there is only one of those.

Shadow:

Okay

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