The number of real roots of the equation $(7+4\sqrt{3})^{\mid x\mid-6}+(7-4\sqrt{3})^{\mid x\mid-6}=14$ is :

The number of real roots of the equation $(7+4\sqrt{3})^{\mid x\mid-6}+(7-4\sqrt{3})^{\mid x\mid-6}=14$ is :
1). 4
2). 3
3). 2
4). 1

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