2013 · Q19
x(y²−z²)+y(z²−x²)+z(x²−y²) is divisible by
Elementary MathematicsAlgebra
- A(y−z) only
- B(z−x) only
- Cboth (y−z) and (z−x)
- Dneither (y−z) nor (z−x)
Explanation
Cyclic; divisible by (x−y)(y−z)(z−x). Answer C.
x(y²−z²)+y(z²−x²)+z(x²−y²) is divisible by
Explanation
Cyclic; divisible by (x−y)(y−z)(z−x). Answer C.