2012 · Q23
What is the HCF of 36(3x^4 + 5x^3 - 2x^2), 9(6x^3 + 4x^2 - 2x), 54(27x^4 - x)?
Elementary MathematicsAlgebra
- A9x(x + 1)
- B9x(3x - 1)
- C18x(3x - 1)
- D18x(x + 1)
Explanation
Factoring: 36x^2(3x-1)(x+2), 18x(3x-1)(x+1), 54x(3x-1)(9x^2+3x+1); the HCF is 18x(3x-1).