What do I need to know to add and subtract rational expressions

This video tutorial covers the essentials of adding and subtracting rational expressions. It explains the importance of finding the least common denominator (LCD) for both numbers and polynomials, and how to rewrite fractions to have common denominators. The tutorial also emphasizes the need to simplify expressions by applying the division property, especially when terms in the numerator and denominator are equivalent. Additionally, it provides guidance on determining the LCD for polynomials by taking the product of binomials.

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