Wat is 3 (x-3) ^ 2-22 in standaardvorm?

Wat is 3 (x-3) ^ 2-22 in standaardvorm?
Anonim

Antwoord:

#color (magenta) (= 3x ^ 2 + 18x + 5 #

Uitleg:

# 3 (x-3) 2-22 ^ #

Identiteit:#color (rood) ((a-b) ^ 2 = a ^ + b ^ 2-2ab 2 #

# 3 = x ^ 2 + 2 (x) (3) + 3 ^ 2 -22 #

# 3 = x ^ 2 + 6x + 9 -22 #

# = 3x ^ 2 + 18x + 27-22 #

#color (magenta) (= 3x ^ 2 + 18x + 5 #