Question

Find a and b if √2-√5/√2+√5
​

Answer 1

Answer

2+3

5

2−

5

⇒

(3

5

+2)(3

5

−2)

(2−

5

)(3

5

−2)

⇒

41

6

5

−4−15+2

5

⇒

41

8

−

19

∴a=

41

8

,b=−

41

19