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  • Question

  • If a - b = 4 and ab = -3, then what is the value of a3- b3 ?


  • Options
  • A. 21
  • B. 28
  • C. 23
  • D. -20

  • Correct Answer
  • 28 

    • Tags: Bank Exams

    Simplification problems

    Search Results

    • 1. If [4(2x/5 - 3/2)]/3 + 7/5 = 37/5, then what is the value of x?

    • Options
    • A. -15
    • B. 7/5
    • C. 15
    • D. -7/5
      • Discuss
    • 2. If Cos ? = 35/37, then what is the value of Cosec ??

    • Options
    • A. 37/12
    • B. 33/12
    • C. 35/12
    • D. 12/35
      • Discuss
    • 3. ? LMN is right angled at M. If m ?N = 45 ° . What is the length (in cm) of MN, if NL = 6?2 cm?

    • Options
    • A. 3
    • B. 4
    • C. 2
    • D. 6
      • Discuss
    • 4. What is the value of Sin 60° + (1/2)Cosec 45°?

    • Options
    • A. (?3 + 2)/2
    • B. (?3 + ?2)/?2
    • C. (?3 + 2)/?2
    • D. (?3 + ?2)/2
      • Discuss
    • 5. What is the equation of a line having a slope -1/3 and y-intercept equal to 6?

    • Options
    • A. x + 3y = 18
    • B. x - 3y = 6
    • C. x + 3y = -18
    • D. x - 3y = -6
      • Discuss
    • 6. The distance between the points (2, 7) and (k, -5) is 13. What is the value of k?

    • Options
    • A. -7
    • B. 7
    • C. 6
    • D. -6
      • Discuss
    • 7. What is the equation of the line perpendicular to the line 5x + 3y = 6 and having Y-intercept -3?

    • Options
    • A. 3x - 5y = 15
    • B. 3x + 5y = 15
    • C. 3x - 5y = -15
    • D. 3x + 5y = -15
      • Discuss
    • 8. D and E are points on side AB and AC of ?ABC. DE is parallel to BC. If AD:DB = 2:5 and area of ?ADE is 8 cm sq, what is the area (in sq cm) of quadrilateral BDEC?

    • Options
    • A. 98
    • B. 94
    • C. 90
    • D. 86
      • Discuss
    • 9. What is the value of Sin 30- ?2 Cos 30

    • Options
    • A. (1 - ?6)/?2
    • B. (1 - ?6)/2
    • C. (3 - ?6)/2
    • D. (3 - ?6)/?2
      • Discuss
    • 10. ? XYZ is right angled at Y. If m ?Z = 60. What is the length (in cm) of YZ, if ZX = 9?3 cm?

    • Options
    • A. 3?3
    • B. 3?3/2
    • C. 9?3/2
    • D. ?3
      • Discuss

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