f(x)=(4x+1)(4x–3) for all positive integers x. Which of t...

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PS · Problem Solving

705-805

Functions

f(x)=(4x+1)(4x–3)

for all positive integers x. Which of the following cannot be a factor of f(x)?
I. 7
II. 16
III. 25

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A

I only

B

II only

C

I and II only

D

I and III only

E

I, II, and III

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