# Rational Expressions & Equations

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Quizzes Created: 2 | Total Attempts: 886
Questions: 6 | Attempts: 527

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Do you think that you achieved the SLO 5 & 6, for rational expressions and equations section?
Take this quiz and find out.

• 1.

### The simplification of  the above rational expression is:

• A.

2x-5

• B.

1

• C.

(x-1)/(x-5)

• D.

Undefined

• E.

No solution

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

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• 2.

### The solution for this equation is:

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

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• 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

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.

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• 4.

### The result of subtracting these two rational expressions is:

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.

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• 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

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

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• 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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