Let $S =\left\{x \in R :(\sqrt{3}+\sqrt{2})^x+(\sqrt{3}-\sqrt{2})^x=10\right\}$. Then the number of elements in $S$ is:

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Let \(S =\left\{x \in R :(\sqrt{3}+\sqrt{2})^x+(\sqrt{3}-\sqrt{2})^x=10\right\}\). Then the number of elements in \(S\) …