Frac 5 pm sqrt 1 2 July 8, 2019 16 32 64 128 X = frac 5 pm sqrt 1 2 Frac 5 pm sqrt -4 3 Frac 1+ sqrt 5 2 2 1+ 5 Frac 1 sqrt 5 Frac 1- sqrt 5 2+ sqrt 5 2+51−5