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Which of these is a polynomial function of x?
A3x^2 - 2x + 7
B1/(x + 2)
Clog(x + 2)
Dsqrt(x + 2)
Answer & Solution
Correct answer: A. 3x^2 - 2x + 7
Only additions, subtractions, multiplications and nonnegative integer powers appear in 3x^2 - 2x + 7.
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