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1/(23*sqrt(23))=(1/(sqrt(23)))^3 how?

 Apr 13, 2016
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Right hand side:
(1/sqrt(23))^3

Rationalize the denominator. 1/sqrt(23)  =  1/sqrt(23)×(sqrt(23))/(sqrt(23))  =  (sqrt(23))/(23):
(sqrt(23))/(23)^3

Multiply each exponent in (sqrt(23))/(23) by 3:
(23^(3/2))/(23^3)

Combine powers. (23^(3/2))/(23^3) = 23^(3/2-3):
23^3/2-3

Put 3/2-3 over the common denominator 2. 3/2-3  =  3/2+(2 (-3))/2:
23^3/2-(3×2)/2

2 (-3)  =  -6:
23^(-6/2+3/2)

3/2-(6)/2  =  (3-6)/2:
23^(3-6)/2

3-6 = -3:
23^(-3/2)

23^(-3/2) = 23^(1/2-(4)/2) = 23^(-4/2)×sqrt(23):
23^(-4/2) sqrt(23)

4/2 = (2 (-2))/2 = 2:
23^(-2) sqrt(23)
Answer:(sqrt(23))/(529)

 

 

Left hand side:
Simplify the following:
1/(23 sqrt(23))

Rationalize the denominator. 1/(23 sqrt(23))  =  1/(23 sqrt(23))×(sqrt(23))/(sqrt(23))  =  (sqrt(23))/(23×23):
(sqrt(23))/(23×23)

23×23  =  529:
Answer: |  (sqrt(23))/(529)

 Apr 13, 2016

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