Wat is de vertexvorm van y = 7x ^ 2-14x-6?

Wat is de vertexvorm van y = 7x ^ 2-14x-6?
Anonim

Antwoord:

# Y = 7 (x-2) 2-13 ^ #

Uitleg:

# Y = 7x ^ 2-14x-6 #

# Y + 6 = 7x ^ 2-14x #

# Y + 6 = 7 (x ^ 2-2x) #

# y + 6 + 7c = 7 (x ^ 2-2x + c) #

#c = (- 2/2) ^ 2 = 1 #

# y + 6 + 7 * 1 = 7 (x ^ 2-2x + 1) #

# Y + 13 = 7 (x-2) ^ 2 #

# Y = 7 (x-2) 2-13 ^ #