# x ^ 2 + 8x-41 = -8 #
# x ^ 2 + 8x-41 + 8 = 0 #
# x ^ 2 + 8x-33 = 0 #
# (x ^ 2 + 8x + 16-16) -33 = 0 # # larr # dobite 16, tako da delite 8 z 2 in #color (bela) "XXXXXXXXXXXXXXXXXX" #kvadriranje vrednosti (8#-:#2= 4), #4^2# = 16
# (x + 4) ^ 2-49 = 0 #