대답: 3#sqrt (2) # 설명: 처음부터 끝내라. #sqrt (8) #: #sqrt (8) # = #sqrt (4 * 2) # #sqrt (4) # = 2 따라서 #sqrt (8) # = 2#sqrt (2) # 2#sqrt (2) # + #sqrt (2) # = 3#sqrt (2) # 글쎄 # sqrt8 + sqrt2 = sqrt (2 ^ 2 * 2) + sqrt2 = 2sqrt2 + sqrt2 = 3 * sqrt2 #