(-(-sqrt(5) %2B 1)^2/4 %2B ((1 %2B sqrt(5))/2)^2)/sqrt(5) – InterviewSolution

1.

(-(-sqrt(5) %2B 1)^2/4 %2B ((1 %2B sqrt(5))/2)^2)/sqrt(5)

Answer»

1÷√5 is the correct answer

(1+ √5)^2 - (1-√5)^2 = ( 1+ √5 + 1-√5)( 1+√5 - 1+√5)

= 2 ( 2√5)

= 4√5

So 1/√5. ( 4√5/4)

= 1/5

this is the perfect...

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1 is the correct answer

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