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Mathematics 12 Online
OpenStudy (airyana1114):

I need help simplifying a radical equation.

OpenStudy (airyana1114):

\[\frac{ x ^{\frac{ 3 }{ 4 }} }{ x ^{\frac{ 5 }{ 6 }} }\]

OpenStudy (airyana1114):

@DanJS

OpenStudy (danjs):

do you recall the exponent properties ..like this one \[\frac{ 1 }{ x^a }=\frac{ x^{-a} }{ 1 }\] change sides of the fraction, you change the sign on the exponent like that

OpenStudy (danjs):

to re-write it as a multiplication instead

OpenStudy (airyana1114):

no :/ i don't

OpenStudy (danjs):

\[\huge \frac{ x^\frac{ 3 }{ 4 } }{ x^\frac{ 5 }{ 6 } } = x^{3/4}*x^{-5/6}\] i think that is a 6 in there, small font to tell, that right?

OpenStudy (danjs):

yeah, see moved the bottom one to the top and changed the sign on the exponent

OpenStudy (airyana1114):

yes thaat's right

OpenStudy (danjs):

then another property is this, when you multiply like bases to powers \[\large x^a*x^b = x^{a+b}\] you add the exponents like that, write those properties down

OpenStudy (danjs):

\[\huge \frac{ x^\frac{ 3 }{ 4 } }{ x^\frac{ 5 }{ 6 } } = x^{3/4}*x^{-5/6}=x^{3/4 + (-5/6)}\] like that, and you can add those fractions to simplify

OpenStudy (airyana1114):

okay so what if i turn the fractions into decimals before I add? will that work?

OpenStudy (danjs):

fractions are Exact, some are repeating decimals that you dont write Exactly, i would keep fractions all the time

OpenStudy (danjs):

1/3 = .3333333 repeating forever, not an exact number in decimal form, approx to how many numbers you write down...

OpenStudy (airyana1114):

okay

OpenStudy (danjs):

Here is a reference thing, you are doing the Exponent Properties, from the first page, those are the key ideas

OpenStudy (danjs):

so adding those fractions, you end up with x^(-1/12) use that first rule again, and put it as 1 / x^(1/12) final answer should have only + exponents probably

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