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How would you simplify (4h^(2/3))^3

Many thanks,

Guest

 Nov 27, 2016
 #1
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64h^2 

 Nov 27, 2016
 #2
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Can you explain how you got that answer please?

Hazeem  Nov 27, 2016
 #4
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Note that (a*b)^3 = (a^3)*(b^3)

 

With a = 4 and b = h^(2/3) we have

 

 (4h^(2/3))^3 → 64 (h^(2/3))^3

 

Also: (h^b)^c = h^(b*c)

 

with b = 2/3 and c = 3 we have b*c = 2, so (h^(2/3))^3 → h^2

 

Hence (4h^(2/3))^3 → 64h^2

 Nov 27, 2016
 #5
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My third line above would be better written as:

 

 (4h^(2/3))^3 →  4^3*(h^(2/3))^3 → 64(h^(2/3))^3

Alan  Nov 27, 2016
 #6
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You multiply 2/3 x 3 =6/3 =2. So, h = h^2. And 4^3 = 64. So the whole thing becomes: 64h^2.

 Nov 27, 2016

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