Adding and subtracting rational expressions is similar to adding fractions. When adding and subtracting rational expressions, we find a common denominator and then add the numerators. To find a common denominator, factor each first. This strategy is especially important when the denominators are trinomials.
Sample Problems (9)
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|7 + 14x||5 + 10x|
|x − 2||x² + 2x + 4||x³ − 8|
|b² + 6b + 5||b² + 5b + 4|