Adding and Subtracting Rational Expressions

Question 1

What must there be to Add or Subtract Rational Expressions?

Answer 1

The denominators must be like (the same).

Question 2

How do you find the LCM of Polynomials?

Answer 2

1. Factor each polynomial completely. Write any repeated factors as powers.
2. List the different factors. If the polynomials have common factors, use the highest power of each common factor.

Question 3

What should be done when adding or subtracting Rational Expressions?

Answer 3

Always simplify the sum or difference of rational expressions. A rational expression can be simplified if its numerator or denominator contain the same factor.

Question 4

What is a Complex Fraction?

Answer 4

A fraction that contains one or more fractions in it’s numerator, denominator, or both.