2009 · Q93
What are the values of c when the HCF of x 3 + cx 2 – x + 2c and x 2 + cx – 2 over the rationals is a linear polynomial?
Elementary MathematicsAlgebra
- A± 1
- B± 2
- C± 3
- D± 4
Explanation
Common root r = −2c from the two equations gives c = ±1.