Question

Let S(x)=x+1/x-3 and R(x)=2/x+2 A. if a(x) = S(x) +R(x) find a simplified expression for a(x) and find the domain of a.

Answer 1

In order to add fractions, in this case\[\frac{ x+1 }{ x-3 } + \frac{ 2 }{ x+2 }\] the denominators have to be the same. What is the lowest common denominator for these two fractions?