Question

Plzz Answer It Fast. ITS URGENT!!!!!!

Answer 1

Hellooo Here is ur ans pls mark me as brainliest if my ans is helpful to u  Ans is in the image below

Answer 2

  4 + √5    =  (4 + √5)²   =  16 + 5 + 8√5 = 21 + 8√5

  4 - √5         16 - 15

4 - √5    =  (4 - √5)²   =  16 + 5 - 8√5 = 21 - 8√5

4 + √5         16 - 15

  4 + √5    +     4 - √5   =   21 + 8√5 + 21 - 8√2 = 42

  4 - √5            4 + √5