Simplifying Complex Fractions
Complex fraction-is a rational expressions that
rational expressions in the numerator and/or the
Simplify: Method 1
To simplify a complex rational expression, use one of
1. Simplify the numerator and denominator if needed.
2. Rewrite as a horizontal division problem.
1. Multiply the numerator and denominator of the complex
rational expression by their LCD.
Simplify each of the following:
6. Suppose three resistors R1, R2,R3
are wired in parallel.
The resistance of the circuit is found using the complex
a) Simplify this complex rational expression.
b) A 20-ohm, a 10-ohm, and a 40-ohm resistor are wired in
parallel. Find the resistance of the circuit.
Class work Worksheet section 7.4 -7.5
Homework Math XL section 7.5