Discussion
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- Question
If x + 1/x = ?13, then 3x(x2-1) equal to
Options- A. 3?13
- B. ?13/3
- C. 1
- D. 3
- Correct Answer
- 1
- 1. If x = 1/(?2+1) then the value of x2 + 2x - 1 is
Options- A. 2?2
- B. 4
- C. 0
- D. 2 Discuss
- 2. If 2x-12x = 5, then what is the value x2 + 116x2 - 2
Options- A. 19/4
- B. 23/4
- C. 27/4
- D. 31/4 Discuss
- 3. If ?3 = 1.732, then the value of 9+233 ?
Options- A. 7.169
- B. 7.196
- C. 5.198
- D. 7.296 Discuss
- 4. If Sin 31° = xy , then the value of Sec 31° - Sin 59° is
Options- A. x2yy2-x2
- B. -x2yy2-x2
- C. -y2y2-x2
- D. x Discuss
- 5. If x = 3+13 , then the value of x-12642x-1x-233 is
Options- A. ?3/6
- B. 2?3/6
- C. 5/6
- D. 2/3 Discuss
- 6. If ? is acute angle and sin(?+18°)= 1/2, then the value of ? in circular measure is
Options- A. ?/12 radians
- B. ?/15 radians
- C. 2?/5 radians
- D. 3?/13 radians Discuss
- 7. If a(x + y) = b(x - y) = 2ab, then the value of 2(x2 + y2)
Options- A. 2(a2 - b2)
- B. 2(a2 + b2)
- C. 4(a2 - b2)
- D. 4(a2 + b2) Discuss
- 8. What is the reflection of the point (6, -1) in the line y = 2?
Options- A. (-2 , -1)
- B. (-6 , 5)
- C. (-2 , 1)
- D. (6 , 5) Discuss
- 9. If a + b = 10 and ab = 24, then what is the value of a3 + b3 ?
Options- A. 280
- B. 152
- C. 140
- D. 72 Discuss
- 10. What is the value of Cot 60°- Sec 45° ?
Options- A. (?2 - ?3)/?6
- B. (?3 - 3?2)/3
- C. (1 - 2?2)/2
- D. (1 - ?3)/2 Discuss
Simplification problems
Search Results
Correct Answer: 0
Correct Answer: 19/4
Correct Answer: 7.196
Correct Answer: x2yy2-x2
Correct Answer: 5/6
Correct Answer: ?/15 radians
Correct Answer: 4(a2 + b2)
Correct Answer: (6 , 5)
Correct Answer: 280
Correct Answer: (?3 - 3?2)/3
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