Consider

a$)G_1(s)=\frac{s-2}{s^2+7s+12}$ and

b$),G_2(s)=\left[\begin{array}{cc}\frac{-2}{s+1}& \frac{6s+5}{2s-1}\\ \frac{s+2}{(s+1)(2s-1)}& \frac{3}{(s-3{)}^2}\end{array}\right].$

c$),G_3(s)=\left[\begin{array}{c}\frac{s}{s-2}\\ \frac{1}{s-3}\end{array}\right]$

Find a state space realization for given functions.