A) Determine the range of values of K such that the system is stable for s(s²+4s+10)+ k (s+5)=0
B) Investigate the stability of the characteristic equation: S5+ S4+ 2s³+ s²+ S + K=0
Notice: S5, S4 in the above means s^5 and s^4 (i.e. s is raised to these powers)