2009 · Q91
What is the LCM of (x 2 – y 2 – z 2 – 2yz), (x 2 – y 2 – x 2 + xz) and (x 2 – y 2 – z 2 – 2xy)?
Elementary MathematicsAlgebra
- A(x + y + z) (x + y – z) (x – y + z)
- B(x + y + z) (x – y – z) (x – y + z)
- C(x + y + z) (x + y – z) (x – y – z)
- D(x + y – z) (x – y – z) (x – y + z)
Explanation
LCM of the three quadratics; answer C.