Equation Questions Practice Question and Answer

Q:

If the difference between the roots of the equation Ax2+BX+C = 0 is 4, then which of the following is TRUE?

1673 0

  • 1
    $$B^2 - 16A^2 = 4AC + 4B^2 $$
    Correct
    Wrong
  • 2
    $$B^2 - 10A^2 = 4AC + 6A^2$$
    Correct
    Wrong
  • 3
    $$B^2 - 8A^2 = 4AC + 10A^2 $$
    Correct
    Wrong
  • 4
    $$B^2 - 16A^2 = 4A^C + 8B^2$$
    Correct
    Wrong
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Answer : 2. "$$B^2 - 10A^2 = 4AC + 6A^2$$"

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Answer : 5. "E"

Q:

What are the roots of the equation log10(x2-6x+45) =2?

1415 0

  • 1
    9, - 5
    Correct
    Wrong
  • 2
    -9, 5
    Correct
    Wrong
  • 3
    11, -5
    Correct
    Wrong
  • 4
    -11, 5
    Correct
    Wrong
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Answer : 3. "11, -5"

Q:

(3x-7)3+(3x-8)3+(3x+6)3=3(3x-7)(3x-8)(3x+6)
Find the value of x ?

1133 0

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

Q:

A root of equation $$({ax}^2+bx+c)$$ (where a, b and c are rational numbers) is 5 +3√3. What is the value of $$({a}^2+b^2+c^2) / (a+b+c) ? $$

1107 0

  • 1
    35/3
    Correct
    Wrong
  • 2
    37/3
    Correct
    Wrong
  • 3
    -105/11
    Correct
    Wrong
  • 4
    -105/13
    Correct
    Wrong
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Answer : 3. "-105/11"

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Answer : 4. "D"

Q:

If 4x+5y=83 and $$ \ {3x\over2y}={21\over22}$$then what is the value of y-x ?

1192 0

  • 1
    3
    Correct
    Wrong
  • 2
    4
    Correct
    Wrong
  • 3
    7
    Correct
    Wrong
  • 4
    11
    Correct
    Wrong
  • 5
    None of these
    Correct
    Wrong
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Answer : 2. "4"

Q:

Find the exact value of the following question:

$$ 3{1\over2} × 3 {1\over 7}+ 5{3\over4}÷{46\over3}=?$$

872 0

  • 1
    $$ 13{2\over5}$$
    Correct
    Wrong
  • 2
    $$ 11{3\over8}$$
    Correct
    Wrong
  • 3
    13
    Correct
    Wrong
  • 4
    None of these
    Correct
    Wrong
  • 5
    11
    Correct
    Wrong
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Answer : 2. "$$ 11{3\over8}$$"

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