Question

if x - 1/x = 3 , find the value of x^2 + 1/x^2​

Answer 1

Answer:

11

Explanation:

x - 1/x = 3

(x - 1/x)² = (3)² [Squaring both sides]

x² + 1/x² - 2 = 9

x + 1/x² = 9 + 2

x + 1/x² = 11

Answer 2

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