Algebra Practice Question and Answer

Q:

If $$ {x^{12}+x^{3}\over {x^{6}}}=0$$ find $$ {x^{36}+{1\over x^{36}}}$$

733 0

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

Q: If a2 + b2 + 64c2 + 16c + 3 = 2(a +b), then the value of 4a7 + b7 + 8c2 is : 1301 0

  • 1
    $$ {4{1\over 8}}$$
    Correct
    Wrong
  • 2
    $$ {5{1\over 8}}$$
    Correct
    Wrong
  • 3
    $$ {4{7\over 8}}$$
    Correct
    Wrong
  • 4
    $$ {3{1\over 8}}$$
    Correct
    Wrong
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Answer : 2. "$$ {5{1\over 8}}$$"

Q:

If x + y = 1 and xy (xy – 2) = 12,then the value of x4 + y4 is:

789 0

  • 1
    23
    Correct
    Wrong
  • 2
    25
    Correct
    Wrong
  • 3
    19
    Correct
    Wrong
  • 4
    20
    Correct
    Wrong
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Answer : 2. "25"

Q:

If (27x3 – 343y3) ÷ (3x – 7y) = Ax2 +By2 + 7Cyx, then the value of (4A – B +5C) is:

764 0

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

Q:

If a + b + c=15, abc=120 and (ab+bc+ca)=74, then the value of a3+b3+c3=?

1912 0

  • 1
    405
    Correct
    Wrong
  • 2
    450
    Correct
    Wrong
  • 3
    401
    Correct
    Wrong
  • 4
    403
    Correct
    Wrong
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Answer : 1. "405"

Q:

 If x+y=14: x3+y3=1064, then the value of (x-y)2 is:

1546 0

  • 1
    81
    Correct
    Wrong
  • 2
    36
    Correct
    Wrong
  • 3
    100
    Correct
    Wrong
  • 4
    64
    Correct
    Wrong
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Answer : 2. "36"

Q:

If x4+2x3+ax2+bx+9 is a perfect square where a and b are positive real numbers, then the value of a and b 

1110 0

  • 1
    a = 5, b = 6
    Correct
    Wrong
  • 2
    a = 6, b = 7
    Correct
    Wrong
  • 3
    a = 7, b = 7
    Correct
    Wrong
  • 4
    a = 7, b = 8
    Correct
    Wrong
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Answer : 2. "a = 6, b = 7"

Q:

If $$ {x+{1\over {x}}=1}$$, then find the value of $$ {x^{208}+{x^{205}+x^{204}+x^{201}}}$$.

1039 1

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

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