Question

Cat face (6+2√5 •6-2√5) : 2 :D

Answer 1

(6+2√5 •6-2√5) : 2 = (6+12√5 -2√5):2= 2(3+4√5-√5):2= 3+4√5-√5= 3+3√5= 3(1+√5).