i am not able to do this question 48 cce test paper ch 1 in rs aggarwal page 38

Find it in meritnation textbook solutions .Hope it's there .
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(√5-1/√5+1)+(√5+1/√5-1)=a+b√5
,rationalize both terms.
you will get in first term=6-2√5/4
in second term=6+2√5/4
:by adding both terms
we will get
12/4=3,-2√5+2√5/4=0/4=0
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