यदि x = 1/(√3 - √2), तो सिद्ध कीजिये (x^3 - 1/x^3) - 2(x^2 + 1/x^2) + 9(x + 1/x) = 20

Question

यदि x =  \(\frac1{\sqrt3 - \sqrt2}\), तो सिद्ध कीजिये (x³ - 1/x³) - 2(x² + 1/x²) + 9(x + 1/x) = 20

Answer 1

x = \(\frac1{\sqrt3 - \sqrt2}\)