+0  
 
+1
279
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avatar+589 

 

jbouyer  Nov 18, 2017
 #1
avatar
+3

27^(4/3) =

(27^4)^1/3 =

(531,441)^1/3 =81 - It is 27 to the 4th power and then take the cube root.

 

4^3/2 =

(4^3)^1/2 =

(64)^1/2 = 8 - it is the cube of 4 and then take the square root.

Guest Nov 18, 2017
 #2
avatar+2255 
+2

For the first one, it would have been easier computationally speaking if you rewrote \(\left(\sqrt[3]{27}\right)^4=3^4=3*3*3*3=9*9=81\)

TheXSquaredFactor  Nov 18, 2017

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