Question

4–underoot5/4+underoot5+4+underoot5/4-underoot5

Answer 1

Answer

4-√5/4+√5 + 4+√5/4-√5

Now , we rationalize it

4-√5/4+√5 × 4-√5/4-√5 + 4+√5/4-√5 × 4+√5/4+√5

(4-√5)^2/16-5 + (4+√5)^2/16-5

16+5-8√5/11 + 16+5+8√5/11

21-8√5+21+8√5/11

21+21/11

42/11