North Rhine-Westphalia Zentralabitur Mathematics Practice Questions - North Rhine-Westphalia Zentralabitur Mathematics (Mathematik) Exam

For f(x) = x^2 - 4x + 3, at what x-value does f have its vertex (extremum)?

x = 2 x = 4 x = -2 x = 0

Correct Answer:

x = 2

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