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Introduction
Finding the Lowest Common Denominator
Arithmetic Sequence and Series
Finding Unit Digits of x^n
  FINDING THE LOWEST COMMON DENOMINATOR (LCD)
Now recall the method used to find the LCD of:


Start with all of the factors of the first expression i.e., x + 2 thus, the LCD = (x+2) • ?

Ask yourself, “Are all the factors of the second expression, in this example
x2 + 3x + 2, represented in the LCD?”

Answer, “No!”
Are all the factors of the second expression represented in the LCD?
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