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Using the xⁿ − aⁿ formula, (x⁵ − 32)/(x − 2) has which limit as x → 2?
A160
B80
C40
D32
Answer & Solution
Correct answer: B. 80
The limit of (xⁿ − aⁿ)/(x − a) is n·aⁿ⁻¹, which is 5 · 16 = 80 here.
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