Let f and g be defined as f(x)=x-5 and g(x)=x²-1. 2. Let f and g be defined as in the previous example. Express the following functions as the sum, difference, quotient, or product of f and g. (a) [tex]p(x) = x {}^{2} - x - 4[/tex] (b) [tex]q(x) = - {x}^{2} + 2x - 9[/tex] (c) [tex]r(x) = \frac{x - 5}{ {2x}^{2} - 2 } [/tex] (d) [tex]s(x) = \frac{ {x}^{2} - x + 4}{x - 5} [/tex] (e) [tex]t(x) = \frac{ {x}^{3} - 4 {x}^{2} - 11x + 30 }{ {x}^{2} - 1 } [/tex]