Algebra Practice Question and Answer

Q:

If (m + 1) = √n + 3, the value of   $${1\over 2}\left({m^3-6m^2+12m-8\over \sqrt { n}}-n \right)  \ $$ is

873 0

  • 1
    0
    Correct
    Wrong
  • 2
    1
    Correct
    Wrong
  • 3
    2
    Correct
    Wrong
  • 4
    3
    Correct
    Wrong
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Answer : 1. "0"

Q:

If x = 2 - 21/3 + 22/3, then the value of x3– 6x2 + 18x + 18 is

867 0

  • 1
    22
    Correct
    Wrong
  • 2
    33
    Correct
    Wrong
  • 3
    40
    Correct
    Wrong
  • 4
    45
    Correct
    Wrong
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Answer : 3. "40 "

Q:

Directions: In each of these questions, two equations (i) and (ii) are given, you have to solve both the equations and give answer accordingly.

(i) 2x² + 9x + 9 = 0
 (ii) 15y² + 16y + 4 = 0

866 0

  • 1
    x > y
    Correct
    Wrong
  • 2
    x < y
    Correct
    Wrong
  • 3
    x ≥ y
    Correct
    Wrong
  • 4
    x ≤ y
    Correct
    Wrong
  • 5
    x = y or no relation can be established between x & y.
    Correct
    Wrong
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Answer : 2. "x < y "

Q:

if 2x2 – 7x + 5 =0, then what is the value of $$x^2+{25\over 4x^2}$$

857 0

  • 1
    $$5{1\over 2}$$
    Correct
    Wrong
  • 2
    $$7{1\over 4}$$
    Correct
    Wrong
  • 3
    $$9{1\over 2}$$
    Correct
    Wrong
  • 4
    $$9{3\over 4}$$
    Correct
    Wrong
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Answer : 2. "$$7{1\over 4}$$"

Q:

If (x + y)3 +8 (x - y)3 = (3x+ Ay)(3x2+ Bxy+ Cy2), then the value of A+B+C is:

857 0

  • 1
    0
    Correct
    Wrong
  • 2
    4
    Correct
    Wrong
  • 3
    2
    Correct
    Wrong
  • 4
    3
    Correct
    Wrong
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Answer : 1. "0"

Q:

When a number x is divided by a divisor it is seen that the divisor = 4 times the quotient=double the remainder. If the remainder is 80 then the value of x is

840 0

  • 1
    6480
    Correct
    Wrong
  • 2
    9680
    Correct
    Wrong
  • 3
    8460
    Correct
    Wrong
  • 4
    4680
    Correct
    Wrong
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Answer : 1. "6480"

Q:

$$x+{1\over x}=2$$ and x is real, then the value of $$x^{17}+{1\over x^{19}}$$ is

836 0

  • 1
    1
    Correct
    Wrong
  • 2
    0
    Correct
    Wrong
  • 3
    2
    Correct
    Wrong
  • 4
    -2
    Correct
    Wrong
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Answer : 3. "2"

Q:

If p, q, r are all real numbers, then (p – q)3 + (q – r)3 + (r – p)3 is equal to 

836 0

  • 1
    (p – q) (q – r) (r – p)
    Correct
    Wrong
  • 2
    3(p – q) (q – r) (r – p)
    Correct
    Wrong
  • 3
    0
    Correct
    Wrong
  • 4
    1
    Correct
    Wrong
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Answer : 2. "3(p – q) (q – r) (r – p) "

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