The number of real values of x satisfying the equation $2 \left(x^{2}+\frac{1}{x^{2}}\right)-9\left(x+\frac{1}{x}\right)+14=0$ is given by :

The number of real values of x satisfying the equation $2 \left(x^{2}+\frac{1}{x^{2}}\right)-9\left(x+\frac{1}{x}\right)+14=0$ is given by :
1). 3
2). 4
3). 2
4). 1

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