Add or Subtract Rational Functions

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Find the least common denominator of the expression

• 18

• 6x

• 3xy

• 6xy

• (x + 9)

• (x - 3) / (x + 2)

• (x + 9) / (x + 2)

• (x - 3)

• A

• B

• C

• A
• B
• C
• D

• A

• B

• C

• D

Add

• A.

• B.

• C.

• D.

Simplify the expression.

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To add or subtract rational expressions you must have a common what?

• Denominator

• Numerator

• Coefficient

• Exponent

When adding or subtracting rational expression with the same denominator...

• Add or subtract the denominators

• Add or subtract the numerators

• Add or subtract both denominator and numerator