Verified Solution Mathematics Polynomials

When x³ - 2x² + kx + 5 is divided by (x-2), the remainder is 1. Find the value of k.

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Solution ✔ Verified
  • A-3
  • B3
  • C-2
  • D2
Explanation

By the Remainder Theorem, P(2) = 1. Substitute x=2: (2)³ - 2(2)² + k(2) + 5 = 1. This simplifies to 8 - 8 + 2k + 5 = 1, so 2k + 5 = 1. Thus, 2k = -4, and k = -2.

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