Antwoord:
Vertex is op #(-5/6,-121/12)# Symmetrie-as is # X = -5/6 #
Uitleg:
# y = 3x ^ 2 + 5x-8 of y = 3 (x ^ 2 + 5 / 3x) -8 = 3 (x ^ 2 + 5 / 3x + 25/36) -25 / 12-8 = 3 (x +5/6) ^ 2 -121/12:. #Vertex is op #(-5/6,-121/12)# Symmetrieas is # X = -5/6 # grafiek {3x ^ 2 + 5x-8 -40, 40, -20, 20} Ans
