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Home Aptitude Simplification Comments

  • Question
  • The value of x13+x-13x23-1+x-23


  • Options
  • A. x-1+x23
  • B. x+x-13
  • C. x13+x-1
  • D. x+x-1

  • Correct Answer
  • x13+x-1 

  • Tags: Bank Exams

    Simplification problems


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    • 1. If a + b + c = 0 , then the value of a3 + b3+ c3 is

    • Options
    • A. abc
    • B. 2abc
    • C. 3abc
    • D. 0
    • Discuss
    • 2. If cos2x + cos4x = 1, then tan2x + tan4x =

    • Options
    • A. 0
    • B. 1
    • C. 2tanx
    • D. tanx
    • Discuss
    • 3. If (x - 4) (x2 + 4x + 16) = x3 - P , then P is equal to

    • Options
    • A. 27
    • B. 8
    • C. 64
    • D. 0
    • Discuss
    • 4. If a + b = 10 and ab = 21, then the value of (a - b)2 is

    • Options
    • A. 15
    • B. 16
    • C. 17
    • D. 18
    • Discuss
    • 5. If cos 27° = x, the value of tan 63° is

    • Options
    • A. x1-x2
    • B. x1+x2
    • C. 1-x2x
    • D. 1+x2x
    • Discuss
    • 6. If tan? = 43 , then the value of 3sin?+2cos?3sin?-2cos? ?

    • Options
    • A. 1/2
    • B. 3/2
    • C. 3
    • D. -3
    • Discuss
    • 7. If 1p+1q = 1p+q , then the value of p3-q3

    • Options
    • A. p-q
    • B. pq
    • C. 1
    • D. 0
    • Discuss
    • 8. If x = 93 , y = 93 , z = 94 then the value of x2 - y2 + 10xz + 10yz is

    • Options
    • A. 104784
    • B. 147840
    • C. 174840
    • D. 184740
    • Discuss
    • 9. If sec (4x - 50°) = cosec(50° - x), Then the value of x is

    • Options
    • A. 45°
    • B. 90°
    • C. 30°
    • D. 60°
    • Discuss
    • 10. Value of (cos 53° - sin 37°) is

    • Options
    • A. 2 sin 37 ?
    • B. 2 cos 53 ?
    • C. 0
    • D. 1
    • Discuss


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