Adding and Subtracting Rational Expressions

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)

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Factor 2x + 4

• x (2 + x)

  Or maybe this is the answer

• 2(2x + 1)

  It's this answer

• 4(x +2)

  Um- Hello!

• 2(x +2)

  This clearly is NOT the answer