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how do u simplify a fraction with a denominator of 2^-3?

 May 29, 2015

Best Answer 

 #1
avatar+980 
+10

For example:

 

x23

 

x(123)

 

(x1)×((23)1)

 

23×x

 May 29, 2015
 #1
avatar+980 
+10
Best Answer

For example:

 

x23

 

x(123)

 

(x1)×((23)1)

 

23×x

zacismyname May 29, 2015
 #2
avatar+118696 
+5

Hi Zac,

you always get these correct but you do not need to make them looks so complicated.

23=231$Nowanythingraisedtoanegpowergetsswappedtotheothersideofthefractionline,andanythingnotraisedtoanegativepowerstayswhereitis$$Sothe1stays,the$23$goestotheothersideofthefractionlineandthebecomesa+.$$Thereisnothingonthetopanymoresojustputa1there$231=?12+3=123

 

Once you do a couple you wil see that it is heaps easier.   

 May 29, 2015
 #3
avatar+118696 
+8

Oh I did not do the correct question  

 

x23=x2+31=8x

 May 29, 2015
 #4
avatar+980 
+5

Well I like to show the in-between steps because I think it makes it easier to understand but once you know the rule you can just cut straight to the answer.

 May 29, 2015
 #5
avatar+118696 
+3

Oh, ok fair enough.  I teach it without the steps inbetween :)

 May 29, 2015

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