Product inequalityMediumQuestion 220020
Question
The solution of x(x−1)(x−2) > 0 is:
- A0 < x < 1 or x > 2Correct
- Bx < 0 or 1 < x < 2
- Cx > 2
- D(−∞, 0) ∪ (1, 2)
Correct answer
0 < x < 1 or x > 2
Explanation
Sign chart for x(x−1)(x−2): − on (−∞,0), + on (0,1), − on (1,2), + on (2,∞). Positive: (0,1) ∪ (2,∞).