Question

if a=2+√3, find the value of (a-1/a)​

Answer 1

Answer:

(a-1/a)

2+√3-1/2+√3

3+√3/2+√3

Answer 2

Hey,

　

Question :-

If a = 2 + √3, then find a - 1/a

　

Solution :-

1/a = 1/2 + √3

1/a = 1/2 + √3 × 2 - √3/2 - √3

1/a = 2 - √3/(2)² - (√3)²

1/a = 2 - √3/4 - 3

1/a = 2 - √3/1

1/a = 2 - √3

a - 1/a = 2 + √3 - 2 - √3

a - 1/a = 2√3

　

Further Information :-

Please refer to the attachment

　

Hope That Helps :)

@MagicHeart~