Question

simplify each of the following

Answer 1

hey this is your answer

Answer 2

RATIONALISATION

√5-2/√5+2*√5-2/√5-2
(√5-2)²=5+4-4√5
          =9-4√5
√5+2/√5-2*√5+2/√5+2
(√5+2)²=5+4+4√5
            =9+4√5


9-4√5-9-4√5
⇒-8√5