Algebra Practice Question and Answer

Q:

If a+b=17,and a – b =9, then the value of $$ {(4a^2+4b^2)}$$ is:

1019 0

  • 1
    710
    Correct
    Wrong
  • 2
    720
    Correct
    Wrong
  • 3
    730
    Correct
    Wrong
  • 4
    740
    Correct
    Wrong
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Answer : 4. "740"

Q:

If x - y = 6 and xy = 40, then  find $$ {x^2+y^2}$$

974 0

  • 1
    146
    Correct
    Wrong
  • 2
    80
    Correct
    Wrong
  • 3
    89
    Correct
    Wrong
  • 4
    116
    Correct
    Wrong
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Answer : 4. "116"

Q:

If $$ {4p\over{{p^2}}-4p+4}={1\over8}$$, p≠0 then the value of $$ {p+{4\over p}}$$

970 0

  • 1
    34
    Correct
    Wrong
  • 2
    37
    Correct
    Wrong
  • 3
    36
    Correct
    Wrong
  • 4
    35
    Correct
    Wrong
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Answer : 3. "36"

Q:

If $$ {x+{1\over x}}=3$$ then find the value of $$ {x^2}-{1\over {x^2}}$$:

998 0

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

Q:

x-y=2, xy=24, then the value of (x2+y2) is:

1066 0

  • 1
    52
    Correct
    Wrong
  • 2
    63
    Correct
    Wrong
  • 3
    36
    Correct
    Wrong
  • 4
    25
    Correct
    Wrong
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Answer : 1. "52"

Q:

If xy(x+y)=1, then $$ {1\over x^3 y^3}-{x^3-y^3}$$ is equal to-

721 0

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

Q:

$$ {a^2-b^2-2bc-c^2}\over{a^2+b^2+2ab-c^2}$$ is equal to

812 0

  • 1
    $$ {a-b-c}\over{a+b-c}$$
    Correct
    Wrong
  • 2
    $$ {a-b+c}\over{a+b-c}$$
    Correct
    Wrong
  • 3
    $$ {a-b-c}\over{a+b+c}$$
    Correct
    Wrong
  • 4
    $$ {a-b-c}\over{a+b-c}$$
    Correct
    Wrong
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Answer : 1. "$$ {a-b-c}\over{a+b-c}$$"

Q:

If (x+y+z)=12, xy+yz+zx=44 and xyz=48, then what is the value of x3+y3+z3=?

1343 0

  • 1
    104
    Correct
    Wrong
  • 2
    144
    Correct
    Wrong
  • 3
    288
    Correct
    Wrong
  • 4
    196
    Correct
    Wrong
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Answer : 3. "288"

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