Antwoord:
Uitleg:
Laten we dit eerst vereenvoudigen.
# = 25x ^ 2 + 20x + 4 + 2 + ^ 55x 22x + 30 #
# = 80x ^ 2 + 42x + 34 #
# 80 = (x ^ 2 + 42 / 80x) + 34 #
# 80 = (x ^ 2 + 2xx21 / 80x + (21/80) ^ 2- (21/80) ^ 2) + 34 #
# 80 = (x ^ 2 + 21/80) ^ 2- (21/80) ^ 2xx80 + 34 #
# 80 = (x ^ 2 + 21/80) ^ 2-441/80 + 34 #
# 80 = (x ^ 2 + 21/80) ^ 2 + 2279/80 #
die in vertex-vorm is en vertex is
grafiek {80x ^ 2 + 42x + 34 -2, 2, -10.9, 149.1}
Antwoord:
Uitleg:
Laten we dit eerst vereenvoudigen.
# = 25x ^ 2 + 20x + 4 + 2 + ^ 55x 22x + 30 #
# = 80x ^ 2 + 42x + 34 #
# 80 = (x ^ 2 + 42 / 80x) + 34 #
# 80 = (x ^ 2 + 2xx21 / 80x + (21/80) ^ 2- (21/80) ^ 2) + 34 #
# 80 = (x ^ 2 + 21/80) ^ 2- (21/80) ^ 2xx80 + 34 #
# 80 = (x ^ 2 + 21/80) ^ 2-441/80 + 34 #
# 80 = (x ^ 2 + 21/80) ^ 2 + 2279/80 #
die in vertex-vorm is en vertex is
grafiek {80x ^ 2 + 42x + 34 -2, 2, -10.9, 149.1}