Difficulty: Easy
Correct Answer: -17
Explanation:
Introduction / Context:
The Remainder Theorem states that the remainder when a polynomial f(x) is divided by (x − a) equals f(a). This gives a fast, error-resistant method.
Given Data / Assumptions:
Concept / Approach:
Compute f(2) directly and that value is the remainder.
Step-by-Step Solution:
f(2) = 2^4 − 6·2^3 + 2·2^2 + 3·2 + 1.= 16 − 6·8 + 2·4 + 6 + 1.= 16 − 48 + 8 + 6 + 1 = −17.
Verification / Alternative check:
Synthetic division at 2 also yields remainder −17.
Why Other Options Are Wrong:
12, 17, −12, −5 arise from partial sums or sign slips; only −17 equals f(2).
Common Pitfalls:
Forgetting order of operations; miscomputing 6·2^3 as 12 or 48 incorrectly.
Final Answer:
−17
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