2012 · Q51
If x^3 + 5x^2 + 10k leaves remainder -2x when divided by x^2 + 2, then what is the value of k?
Elementary MathematicsAlgebra
- A-2
- B-1
- C1
- D2
Explanation
Dividing gives remainder -2x + (10k-10); setting it equal to -2x gives k = 1.
If x^3 + 5x^2 + 10k leaves remainder -2x when divided by x^2 + 2, then what is the value of k?
Explanation
Dividing gives remainder -2x + (10k-10); setting it equal to -2x gives k = 1.