how to get the zeros poles and the value of the system zeros

how to get the zeros, poles, and the value of the system zeros? explain how they get the answer.

Solution

6) the roots of denominator

s=0;

s^2+2s+1=0

(s+1)^2=0

s=-1,-1

number of poles=3

poles are 0,-1,-1

7) the roots of numerator 4s+1=0

s=-1/4

number of zeros=1

zeros are s=-1/4.