Question

(root5-1 by root5+1 + root5+1 by root5-1

Answer 1

HAI FRIEND
here is your solution

=[√5-1/√5+1]+ [√5+1/√5-1]

=(√5-1)²+(√5+1)² / √5-1 *√5+1
=5+1-2√5+5+1+2√5/ √(5)²-1²

formula [a+b ] [a-b] =a²-b²

=12/5-1
=12/4
=3

HOPE HELPED

Answer 2

Answer:

HEY FRIEND! HOPE U LIKE IT

Step-by-step explanation:

=[√5-1/√5+1]+ [√5+1/√5-1]

=(√5-1)²+(√5+1)² / √5-1 *√5+1

=5+1-2√5+5+1+2√5/ √(5)²-1²

formula [a+b ] [a-b] =a²-b²

=12/5-1

=12/4

=3