Úloha ID 2962 - 
Která z následujících rovností platí pro funkci f, která je definována jako f(x)=(x - 4)(x + 4)?
Správná odpověď je: A
Do funkce můžeme dosadit jako f(4) = (4 - 4)(4 + 4), tedy f(4) = f (- 4) = 0.
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