Question

x=2-√3, the value of x2-1/x2 =​

Answer 1

Answer:

Step-by-step explanation:

x = 2 - √3

1/x = 1/2 - √3 = 1/2 - √3 *( 2 + √3 / 2 + √3) = 2 + √3 / 4 - 3 = 2 + √3

x² - 1/x² = (2 - √3)² - (2 + √3) ²

            = 4 + 3 - 4√3 - 4 -3 - 4√3

             = - 8√3

Answer 2

Answer:

$- 8 \sqrt{3}$

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