plz answer the attached question
thx
I have a test tomorrow
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(√a-1/√a)^2=a+1-2*√a*1/√a=a-1
so √(a-1)=√a-1/√a
√(9-4√5-1)=√a-1/√a
√a-1/√a=√(8-4√5) Answer
so √(a-1)=√a-1/√a
√(9-4√5-1)=√a-1/√a
√a-1/√a=√(8-4√5) Answer
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