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Home > INT3 > Chapter 11 > Lesson 11.2.4 > Problem 11-109
11-109.
For each of the following rational expressions, add or subtract, then simplify.
The denominators are the same, so just add the numerators.
Factor the numerator and look for a Giant One.
See part (a).
The product of the two denominators is the common denominator. Multiply each term by a Giant One to make the denominators the same.
Distribute:
Now, subtract. Notice you are subtracting a negative
in the second term.
See part (c).