Question

find the zeroes of the polynomial x2+2x+1

Answer 1

zeros means roots of equation
x²+2x+1 = 0 
(x+1)² = 0 
x+1 = 0 
x = -1
equation have both roots equal and that is = -1 

Answer 2

Answer:

x^2+2x+1

x^2+1x +1x +1

x(x+1)+1(x+1)

(x+1) (x+1)

(x=-1)