Algebra Practice Question and Answer

Q:

If a + b – c = 0 then the value of 2b2c2 + 2c2a2 + 2a2b2 –a4 – b– c4

607 0

  • 1
    7
    Correct
    Wrong
  • 2
    0
    Correct
    Wrong
  • 3
    14
    Correct
    Wrong
  • 4
    28
    Correct
    Wrong
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Answer : 2. "0"

Q:

If $$P_1$$, $$P_2$$, and $$P_3$$ are three distinct prime numbers, then what is the least common multiple of $$P_1$$, $$P_2$$, and $$P_3$$?

604 1

  • 1
    $$P_1$$
    Correct
    Wrong
  • 2
    $$P_1 × P_2 × P_3$$
    Correct
    Wrong
  • 3
    $$P_2 × P_3$$
    Correct
    Wrong
  • 4
    $$P_1 + P_2 + P_3$$
    Correct
    Wrong
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Answer : 2. "$$P_1 × P_2 × P_3$$"

Q:

if  $${5x-{5\over x}+6=0}$$, then $$x^2+{1\over x^2}$$ is

602 0

  • 1
    $$86\over11$$
    Correct
    Wrong
  • 2
    $$43\over12$$
    Correct
    Wrong
  • 3
    $$86\over25$$
    Correct
    Wrong
  • 4
    $$81\over10$$
    Correct
    Wrong
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Answer : 3. "$$86\over25$$"

Q:

if $$a+{1\over a}=5$$, then what is the value of $$a^3+{1\over a^3}$$

598 0

  • 1
    110
    Correct
    Wrong
  • 2
    15
    Correct
    Wrong
  • 3
    105
    Correct
    Wrong
  • 4
    -10
    Correct
    Wrong
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Answer : 1. "110 "

Q:

If a = 34, b = c = 33, then the value of a3 + b3 + c3 – 3abc is

586 0

  • 1
    0
    Correct
    Wrong
  • 2
    111
    Correct
    Wrong
  • 3
    50
    Correct
    Wrong
  • 4
    100
    Correct
    Wrong
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Answer : 4. "100"

Q:

Find the radius of the circle x2+y2-4x+6y=12

586 0

  • 1
    4
    Correct
    Wrong
  • 2
    3
    Correct
    Wrong
  • 3
    5
    Correct
    Wrong
  • 4
    2
    Correct
    Wrong
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Answer : 3. "5"

Q:

If α, β are the roots of 6x2+13x+7=0, then the equation whose roots are α2, β2 is:

566 0

  • 1
    36x2 − 87x + 49 = 0
    Correct
    Wrong
  • 2
    36x− 85x − 49 = 0
    Correct
    Wrong
  • 3
    36x− 85x + 49 = 0
    Correct
    Wrong
  • 4
    36x+ 87x − 49 = 0
    Correct
    Wrong
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Answer : 3. "36x− 85x + 49 = 0"

Q:

If x2 + y2 + z2 = 2 (x + z – 1), then the value of : x3 + y3 + z3 = ?

534 0

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

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