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For what value of x is x = 2 a zero of x² − 4?
AYes — p(2) = 0
BNo — p(2) ≠ 0
COnly if x positive
DCannot tell
Answer & Solution
Correct answer: A. Yes — p(2) = 0
p(2) = 4 − 4 = 0, so 2 is indeed a zero of x² − 4. (The other zero is −2.)
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