2012 · Q67
What is the value of k that (2x - 1) may be a factor of 4x^4 - (k-1)x^3 + kx^2 - 6x + 1?
Elementary MathematicsAlgebra
- A8
- B9
- C12
- D13
Explanation
Substituting x = 1/2: 1/4 - (k-1)/8 + k/4 - 3 + 1 = 0 gives k = 13.
What is the value of k that (2x - 1) may be a factor of 4x^4 - (k-1)x^3 + kx^2 - 6x + 1?
Explanation
Substituting x = 1/2: 1/4 - (k-1)/8 + k/4 - 3 + 1 = 0 gives k = 13.