QuestionFind the least common denominator of $\frac{16}{x-9}$ and $\frac{15}{x^{2}-81}$. What is it?

Studdy Solution
The least common denominator (LCD) is the least common multiple (LCM) of the denominators.The LCM of $x-9$ and $(x-9)(x+9)$ is $(x-9)(x+9)$.
So, the least common denominator of the rational expressions is $(x-9)(x+9)$.