Adding and Subtracting Rational Expressions

(x-9)/(x+9)

1/(x-9)

(x+9)

1/(x+9)

• (x-9)/(x+9)

• 1/(x-9)

• (x+9)

• 1/(x+9)

What do you have to do when adding or subtracting rational expressions? Check all that apply.

• Find a common denominator

• Solve for x

• Simplify completely

• Nothing

• Distribute the negative (Subtracting only)

• A
• B
• C
• D

• A
• B
• C
• D

• A
• B
• C
• D

Simplify and state the excluded values.

• A

• B

• C

• D

Which value of x makes the expression undefined?

• -2

• 2

• -6

• -3

Add the following expressions. Simplify Completely

• Can't add these

Subtract, factor, simplify

• A

• B

• C

• D

Hint: Factor first

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