Discussion
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- Question
If a(a + b + c) = 45, b(a + b + c) = 75 and c(a + b + c) = 105, then what is the value of (a2 + b2 + c2 ) ?
Options- A. 75
- B. 83
- C. 217
- D. 225
- Correct Answer
- 83
- 1. If x1/4 + x-1/4 = 2 , then what is the value of x81 + (1/x81) ?
Options- A. -2
- B. 0
- C. 1
- D. 2 Discuss
- 2. If (x2/yz) + (y2/zx) + (z2/xy) = 3 , then what is the value of (x + y + z)3 ?
Options- A. 0
- B. 1
- C. 2
- D. 3 Discuss
- 3. If sin?+cos?sin?-cos?=3, then the value of sin4?-cos4? is
Options- A. 4/3
- B. 3/4
- C. 5/3
- D. 3/5 Discuss
- 4. In ?ABC if the median AD=1/2 BC, then ?BAC is
Options- A. 90°
- B. 45°
- C. 60°
- D. 75° Discuss
- 5. If 2x+2x=3, then the value of x3+1x3+2 is
Options- A. 3/4
- B. 4/5
- C. 5/8
- D. 7/8 Discuss
- 6. If x2 + (1/x2) = 1 , then what is the value of x48 + x42 + x36 + x30 + x24 + x18 + x12 + x6 + 1 ?
Options- A. -9
- B. 0
- C. 1
- D. 9 Discuss
- 7. What is the simplified value of sin2(90??)?[sin(90??)sin?/tan?] ?
Options- A. 1
- B. cosec ?
- C. 0
- D. cos ? Discuss
- 8. What is the simplified value of cosec 2A + cot 2A?
Options- A. sec A
- B. sec (A/2)
- C. cot A
- D. cot2 A Discuss
- 9. If a+b=5 then the value of a-37+b-27 is
Options- A. 27
- B. 37
- C. 1
- D. 0 Discuss
- 10. If x2-2x+1=0, then the value of x4+1x4 is
Options- A. 0
- B. 1
- C. 2
- D. 3 Discuss
Simplification problems
Search Results
Correct Answer: 2
Correct Answer: 0
Correct Answer: 3/5
Correct Answer: 90°
Correct Answer: 7/8
Correct Answer: 1
Correct Answer: 0
Correct Answer: cot A
Correct Answer: 0
Correct Answer: 1
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