Rational Expressions & Equations

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| By Mathwoman
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Rational Expressions & Equations - Quiz

Do you think that you achieved the SLO 5 & 6, for rational expressions and equations section?
Take this quiz and find out.
Instructions: you will answer several questions in different formats regarding rational expressions and equations. Please read carefully the problems and answer the questions asked.


Questions and Answers
  • 1. 

    The simplification of  the above rational expression is:

    • A.

      2x-5

    • B.

      1

    • C.

      (x-1)/(x-5)

    • D.

      Undefined

    • E.

      No solution

    Correct Answer
    C. (x-1)/(x-5)
    Explanation
    Factor numerator and denominator and then simply common factors if it is possible.

    Rate this question:

  • 2. 

    The solution for this equation is:

    Correct Answer
    x=10
    10
    Explanation
    The substitution of 10 in the equation provides a true statement, therefore the number is a solution.

    Rate this question:

  • 3. 

    The LCD for these rational expressions is:

    • A.

      (x+1)(x-1)

    • B.

      5(x-1)(x+1)

    • C.

      5(x-1)(x-1)(x+1)

    • D.

      5(x-1)(x-1)

    • E.

      None of the above

    Correct Answer
    C. 5(x-1)(x-1)(x+1)
    Explanation
    The LCD is the product of all factors, in the comparing denominators, with the highest number of repetitions.

    Rate this question:

  • 4. 

    The result of subtracting these two rational expressions is:

    Correct Answer
    3/(y+5)
    3/(5+y)
    Explanation
    Same denominator, do the operation in the top and keep common denominator, and then simplify common factors if it is posssible.

    Rate this question:

  • 5. 

     A semi-truck travels 300 miles through the flatland in the same amount of time that it travels 180 miles through mountains . The rate of the truck is 20 miles per hour slower in the mountains than in the flatland.  The flatland rate is 30mph

    • A.

      True

    • B.

      False

    Correct Answer
    B. False
    Explanation
    This problem will be discussed in class.

    Rate this question:

  • 6. 

    Please write down the students learning outcome for this section.Hint: there are only two.

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  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Sep 03, 2010
    Quiz Created by
    Mathwoman
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