2 questions, help?

Using complete sentences, explain why it is necessary to have common denominators when adding or subtracting rational expressions. (2 points)

Using complete sentences, explain why it is necessary to have a strong foundation in factoring when working with rational expressions. (2 points)

Question

2 questions, help?


Using complete sentences, explain why it is necessary to have common denominators when adding or subtracting rational expressions. (2 points)

Using complete sentences, explain why it is necessary to have a strong foundation in factoring when working with rational expressions. (2 points)

anonymous · Answer

Common denominators are required to add or subtract rational expressions, for without that, both numbers will be totally different in properties, which will make it difficult for any mathematical operation to be carried out between them.

A strong foundation is advised because rational expressions often involve a lot of factoring. Therefore, it is good to know it thoroughly.