If x = $\sqrt{3}$ + $\sqrt{2}$,then the value of $x^{-2}$ is,

If x = $\sqrt{3}$ + $\sqrt{2}$,then the value of $x^{-2}$ is,
1). $\sqrt{3}$ - $\sqrt{2}$
2). $5+2\sqrt{6}$
3). $\sqrt{3}$ + $\sqrt{2}$
4). $5-2\sqrt{6}$

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