Question

if x =3-2√2 . find x - 1 / x​

Answer 1

x = 3 - 2√2

1/x = 1 / 3 - 2√2

= 3 + 2√2 / (3 - 2√2)(3 + 2√2)

= 3 + 2√2 / (3)² - (2√2)²

= 3 + 2√2 / 9-8

= 3 + 2√2

NOW

• x - 1/x

• 3 - 2√2 - (3 + 2√2)

• 3 - 2√2 - 3 - 2√2

• -4√2

Answer 2

Answer:

-4underroot2

is the right answer