Dear all, in this class we leaned the multiplication/division and additions/subtraction of rational expressions. The method is just like the calculations of fractional numbers that you leaned before (fractional numbers are also rational expressions, right?). Please keep in mind that you need to factor the denominators completely to find the LCD (for addition/substration), and to factor the numerators completely as well to simplify the rational expressions.
Here are some key points and examples:
Here are some key points and examples: