化简√[5/2+√(9/4-√5)]

√(9/4-√5) = √[(1 - √5/2)^2] = √5/2 - 1√[5/2+√(9/4-√5)] = √[5/2 + √5/2 - 1]= √[(3 + √5)/2]= (1/2)√(6 + 2√5)= (1/2)√[(1 + √5)^2]= (1 + √5)/2