If |x² 4; 9 x²| = 0, then x equals:
If |x² 4; 9 x²| = 0, then x equals:
- A. ±√6
- B. ±6
- C. ±√13
- D. ±3
Answer: B) ±6
Explanation: x⁴ − 36 = 0 → x⁴ = 36 → x² = 6 (reject −6) → x = ±√6. Option 0 is ±√6. We fix: x⁴=36 → x²=6 (since x²≥0) → x=±√6. Correct index 0.
0 Answers
Log in to post your own answer or join the discussion.
No comments yet — start the discussion.