Algebra Practice Question and Answer

Q:

If 9x2 + y2 = 37 and xy = 2, x, y>0, then the value of (27x3+ y3) is:

890 0

  • 1
    301
    Correct
    Wrong
  • 2
    217
    Correct
    Wrong
  • 3
    207
    Correct
    Wrong
  • 4
    259
    Correct
    Wrong
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Answer : 2. "217"

Q:

If $$x+{1\over x}=c{1\over c}$$ then the value of x

886 0

  • 1
    c, 1\c
    Correct
    Wrong
  • 2
    c, c2
    Correct
    Wrong
  • 3
    c, 2c
    Correct
    Wrong
  • 4
    0, 1
    Correct
    Wrong
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Answer : 1. "c, 1\c "

Q:

If   $$x+{1\over x}=2 $$ then the value of    $$x^{12}-{1\over x^{12}} $$ is

883 0

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

Q:

If (10 a3+4b3):(11a3-15b3)=7:5, then (3a+5b):(9a-2b)=?

882 0

  • 1
    10:13
    Correct
    Wrong
  • 2
    8:7
    Correct
    Wrong
  • 3
    5:4
    Correct
    Wrong
  • 4
    3:2
    Correct
    Wrong
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Answer : 1. "10:13"

Q:

Given that x3 + y= 72 and xy = 6 with x > y. Then the value of (x – y) is

881 0

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

Q:

What is the product of (x + a) and (x + b)?

878 0

  • 1
    x2+(a-b)x+ab
    Correct
    Wrong
  • 2

    x2+(a-b)x-ab

    Correct
    Wrong
  • 3

    x2+(a+b)x+ab

    Correct
    Wrong
  • 4

    x2+(a+b)x-ab

    Correct
    Wrong
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Answer : 3. "

x2+(a+b)x+ab

"

Q:

If x + y + 3 = 0 , then find the value of x3+y3-9xy+9.

876 0

  • 1
    18
    Correct
    Wrong
  • 2
    36
    Correct
    Wrong
  • 3
    -36
    Correct
    Wrong
  • 4
    -18
    Correct
    Wrong
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Answer : 4. "-18 "

Q:

If x = 332, y = 333, z = 335, then the value of x3 + y3 + z3 – 3xyz is

875 0

  • 1
    10000
    Correct
    Wrong
  • 2
    7000
    Correct
    Wrong
  • 3
    8000
    Correct
    Wrong
  • 4
    9000
    Correct
    Wrong
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Answer : 2. "7000 "

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