1.

Thus, 9x2 + 49 y2 -58Ifx +--5, then find the value of the following :E 4.

Answer»

Given :

x + 1/x = 5

Squaring both sides

(x + 1/x)² = 25

x² + 1/x² + 2 = 25

x² + 1/x² = 23



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