Question

find the zero of the following polynomial if any X square + 4 x + 4

Answer 1

x^2 +4x +4 = 0
(x+2)^2 = 0
x = -2
Hope it helped you...

Answer 2

x²+4x+4
x²+(2+2)x+4
x²+2x+2x+4
x(x+2)+2(x+2)
(x+2) ( x+2)
(x+2)²
x= -2
...
hope it helps