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# need help

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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
+113657
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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
+113657
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What is  (sqrt3 + sqrt2)^3?

What is  (sqrt3 - sqrt2)^3?

Jan 31, 2021