2014 · Q49
What is the lowest common multiple of ab(x² + 1) + x(a² + b²) and ab(x² − 1) + x(a² − b²)?
Elementary MathematicsHCF and LCM
- A(a²x² − b²)(a + bx)
- B(a²x² − b²)(a + bx)²
- C(a²x² − b²)(a − bx)
- D(a²x² − b²)(a − bx)²
Explanation
The expressions factor as (a + bx)(ax + b) and (a + bx)(ax − b); the LCM is (a + bx)(a²x² − b²).