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- Question
A complete factorisation of x4 + 64 is
Options- A. (x2 + 8)2
- B. (x2 + 8)(x2 - 8)
- C. (x2 - 4x + 8)(x2 -4x - 8)
- D. (x2 + 4x + 8)(x2 - 4x + 8)
- Correct Answer
- (x2 + 4x + 8)(x2 - 4x + 8)
- 1. If x + 1x = c + 1c , then the value of x =
Options- A. C, 1/C
- B. C, C2
- C. C, 2C
- D. 0,1 Discuss
- 2. If P = 99, then the value of P(P2+ 3P + 3) is
Options- A. 9999
- B. 999999
- C. 99999
- D. 9999999 Discuss
- 3. A man can cover a certain distance in 3 hours 36 minutes if he walks at the rate of 5 Km/hr. If he covers the same distance on cycle at the rate of 24 Km/hr, then the time taken by him in minutes is
Options- A. 40
- B. 45
- C. 50
- D. 55 Discuss
- 4. An army lost 10% of its men in war, 10% of the remaining died due to disease and 10% of the rest were declared disabled. Thus the strength of the army was reduced to 7,29,000 active men. The original strength of the army was
Options- A. 1500000
- B. 1000000
- C. 1200000
- D. 1100000 Discuss
- 5. In the first 10 overs of a cricket game, the run rate was only 3.2. The run rate in the remaining 40 overs to reach the target of 282 runs is
Options- A. 6.4
- B. 6.3
- C. 6.25
- D. 6.5 Discuss
- 6. If a + b = 1, then a4 + b4 - a3 - b3 - 2a2b2 + ab is equal to
Options- A. 1
- B. 2
- C. 4
- D. 0 Discuss
- 7. If a = 299, b = 298, c = 297 then the value of 2a3 + 2b3 + 2c3 - 6abc is
Options- A. 5154
- B. 5267
- C. 5364
- D. 5456 Discuss
- 8. If x + 1x = 3, then x18 + x12 + x6 + 1 value is
Options- A. 0
- B. 1
- C. 2
- D. 3 Discuss
- 9. In a circle with centre O, AB is a diameter and CD is a chord which is equal to the radius OC. AC and BD are extended in such a way that they intersect each other at a point P, exterior to the circle. The measure of ?APB is
Options- A. 30°
- B. 45°
- C. 60°
- D. 90° Discuss
- 10. If x tan 60° + cos 45° = sec 45° then the value of x2 + 1 is
Options- A. 6/7
- B. 7/6
- C. 5/6
- D. 6/5 Discuss
Simplification problems
Search Results
Correct Answer: C, 1/C
Correct Answer: 999999
Correct Answer: 45
Correct Answer: 1000000
Correct Answer: 6.25
Correct Answer: 0
Correct Answer: 5364
Correct Answer: 0
Correct Answer: 60°
Correct Answer: 7/6
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