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Find the remainder when f(x) is divided by (x - k)
f(x) = 5x4 + 8x3 + 4x2 - 5x + 67; k = 2
Solution:
Given a polynomial f(x) = 5x4 + 8x3 + 4x2 - 5x + 67. The divisor (x - k) is also a linear polynomial.
Thus we apply the remainder theorem to find the remainder
When f(x) is divided by (x-a), then the remainder is f(a).
Thus here f(x) = 5x4 + 8x3 + 4x2 - 5x + 67 is divided by (x - k)
⇒ x = k where value of k = 2 (given)
f(k = 3) = 5(2)4 + 8(2)3 + 4(2)2 - 5(2) + 67
f(k) = 80 + 64 + 16 - 10 + 67
f(k) = 217
Find the remainder when f(x) is divided by (x - k)
f(x) = 5x4 + 8x3 + 4x2 - 5x + 67; k = 2
Summary:
Therefore, the remainder when f(x) = 5x4 + 8x3 + 4x2 - 5x + 67 is divided by (x - k); k = 2 is 217.
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