Algebra › Section G · Rational expressions and functions › Topic G.3
Complex rational expressions
A complex fraction has fractions inside its numerator or denominator - a fraction wearing fractions. Two routes flatten it into an ordinary rational expression, and both routes always agree.
In this topic
- A fraction wearing fractions
- Route 1: multiply through by the LCD
- Worked example: route 1
- Route 2: combine, then divide
- Worked example: route 2 on the same expression
- Choosing between the routes
- Restrictions travel inward
- Worked example: binomial inner denominators
- Common mistakes to avoid
- Key takeaways
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