MCQ
If x + a is a factor of x4 - a2x2 + 3x - 6a, then a =
- A0
- B1
- C-1
- D2
✓
Answer
- 0
Solution:
Put x + a = 0 ⇒ x = -a
Then, value of x4 - a2x2 + 3x - 6a at x = -a is zero
Therefore, (-a)4 - a2(-a)2 + 3(-a) - 6a = 0
-9a = 0 ⇒ a = 0
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