Adding and Subtracting Rational Expressions

Question 1

These rational expressions all have the same denominator. Write the sum of their numerators over the common denominator:

Revolt · Accepted Answer

C:

Question 2

Study the example shown below.Which expression should replace the word “numerator” in the work shown?

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B:

Question 3

What is the least common denominator (LCD) of the rational expressions being added?

Revolt · Accepted Answer

B: x2

Question 4

Complete the following steps to find the LCD and write the sum of the numerators for the given problem:Factor each denominator:x2 – 3x – 4 =

Revolt · Accepted Answer

A: (x – 4)(x + 1)

Question 5

Simplify:Rewrite the expression using the LCD:

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A:

Question 6

Rewrite the expression using the common denominator:

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C:

Question 7

x2 – 6x + 8 =

Revolt · Accepted Answer

C: (x – 4)(x – 2)

Question 8

Simplify:

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B:

Question 9

What is the numerator in the sum?

Revolt · Accepted Answer

C: 2(x – 2) + 3(x + 1)

Adding and Subtracting Rational Expressions Answers