Equation Questions Practice Question and Answer

Q:

If α and β are the roots of equation $$ {x^2-2x+4=0}$$, then what is the equation whose roots are ${α^3}\over{β^2}$$ and $${β^3}\over{α^2}$$.

841 0

  • 1
    $$ {x^2-4x+8=0}$$
    Correct
    Wrong
  • 2
    $$ {x^2-32x+4=0}$$
    Correct
    Wrong
  • 3
    $$ {x^2-2x+4=0}$$
    Correct
    Wrong
  • 4
    $$ {x^2-16x+4=0}$$
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 3. "$$ {x^2-2x+4=0}$$"

Q:

If α and β are the roots of the equation x2 + x - 1 = 0, then what is the equation whose roots are and α5 and β

1211 0

  • 1
    $$x^2 - 11x - 1 = 0 $$
    Correct
    Wrong
  • 2
    $$x^2 + 11x - 1 = 0$$
    Correct
    Wrong
  • 3
    $$x^2 + 7x - 1 = 0 $$
    Correct
    Wrong
  • 4
    $$x^2 - 7x- 1 = 0 $$
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "$$x^2 + 11x - 1 = 0$$"

Q:

If 2x + 3y = 87 and 3x – 3y = 48, what is the value of x?

1237 0

  • 1
    29
    Correct
    Wrong
  • 2
    11
    Correct
    Wrong
  • 3
    72
    Correct
    Wrong
  • 4
    None of these
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 4. "None of these"

Q:

The factors of  $$ x^2-2x-15 $$ are: 

1010 0

  • 1
    (x+5) (x–3)
    Correct
    Wrong
  • 2
    (x–5) (x–3)
    Correct
    Wrong
  • 3
    (x–3) (x–1)
    Correct
    Wrong
  • 4
    (x–5) (x+3)
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 4. "(x–5) (x+3)"

Q:

If $$ {4x^2}={25}^2-{15}^2 $$, then find the value of x.

1102 0

  • 1
    10
    Correct
    Wrong
  • 2
    50
    Correct
    Wrong
  • 3
    100
    Correct
    Wrong
  • 4
    25
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 1. "10 "

Q:

If 3x+0.04x=0.608, find x. 

1322 0

  • 1
    2
    Correct
    Wrong
  • 2
    0.2
    Correct
    Wrong
  • 3
    0.02
    Correct
    Wrong
  • 4
    0.002
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "0.2 "

Q:

Solve: 0.05 × 0.4 

1021 0

  • 1
    2
    Correct
    Wrong
  • 2
    0.02
    Correct
    Wrong
  • 3
    0.2
    Correct
    Wrong
  • 4
    0.002
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 2. "0.02 "

Q:

If a + b = -2 and a - b = 12, find b. 

1056 0

  • 1
    5
    Correct
    Wrong
  • 2
    -5
    Correct
    Wrong
  • 3
    7
    Correct
    Wrong
  • 4
    -7
    Correct
    Wrong
  • Show AnswerHide Answer
  • Workspace

Answer : 4. "-7 "

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully

      Report Error

    Please Enter Message
    Error Reported Successfully