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If \(a=(\sqrt{3}+\sqrt{2})^{-3}\) and \(b=(\sqrt{3}-\sqrt{2})^{-3}\), find the value of \( (a+1)^{-1}+(b+1)^{-1}\).

 Jan 31, 2021
 #1
avatar+112575 
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I did it a super long way, which may or may not be the only way to do it.  

 

What have you done towards solving it ?

 Jan 31, 2021
edited by Melody  Jan 31, 2021
 #2
avatar+112575 
+1

What is  (sqrt3 + sqrt2)^3?

 

What is  (sqrt3 - sqrt2)^3? 

 Jan 31, 2021

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