Question

If `x^2 + 1/x^2` = 11, then `x - 1/x` is equal to:

विकल्प

• 2

• 3

• 5

• 4

Answer 1

3

Explanation:

`x^2 + 1/x^2` = 11

`x - 1/x = sqrt((11) - 2)` = 3