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Help 2,3

 May 16, 2018
 #1
avatar+94619 
+1

2.  We  can represent this as

 

3^(1/3)  / 4^(1/3)      multiply top/bottom  by   4^(2/3)

 

[3^(1/3) * 4^(2/3)  / [ 4^(1/3) * 4^(2/3)  ]  =

 

[ 3^1  * 4^2 ] ^(1/3)  /  4   =

 

[ 48]^(1/3)  / 4  =

 

[ 8 * 6 ]^(1/3)  / 4  =

 

2 * [ 6] ^(1/3)  / 4  =

 

6^(1/3)  / 2   ⇒  second answer

 

 

 

 

3.   27^(1/3)   = cube root of 27   = 3

 

 

 

cool cool cool

 May 16, 2018

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