Algebra Question with answer Practice Question and Answer

Q:

If a + b + c = 6, a3 + b3+c3-3abc=342, then what is the value of ab + bc + ca?

876 0

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

Q:

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

873 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:

if $${{x^{24}+1}\over x^{12}}=7$$ then the value of   $${{x^{72}+1}\over x^{36}}$$ is

873 0

  • 1
    433
    Correct
    Wrong
  • 2
    322
    Correct
    Wrong
  • 3
    343
    Correct
    Wrong
  • 4
    432
    Correct
    Wrong
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Answer : 2. "322 "

Q:

if $$m+{1\over(m-2)}=4$$,then find the value of  $$ (m-2)^2+ \left({{1\over {m-2}}} \right)^2 \ $$

870 0

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

Q:

If   $$ a={b^2\over b-a} $$  then the value of a3 + b3 is 

859 0

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

Q:

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

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

857 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 a + b + c = 6, a2 + b+ c= 14 and a3 + b3 + c= 36, then the value of abc is

843 0

  • 1
    3
    Correct
    Wrong
  • 2
    6
    Correct
    Wrong
  • 3
    9
    Correct
    Wrong
  • 4
    12
    Correct
    Wrong
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Answer : 2. "6 "

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