if x+$\frac{1}{2}$=-2, then the value of $x^{7}$+$\frac{1}{x^{7}}$

if x+$\frac{1}{2}$=-2, then the value of $x^{7}$+$\frac{1}{x^{7}}$
1). 1
2). -1
3). 3
4). 6

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