Quantitative Aptitude Algebra

ଯଦି \(x+\frac{1}{x}=-2 \text {, }\)  ହୁଏ, ତେବେ \(\mathrm x^7+x^{-7}+x^2+x^{-2} ?(\mathrm{x}<0)\) ର ମୂଲ୍ୟ କେତେ ହେବ ?

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