AMMANANNA10 Years agofor this question is the expansion isx^2+2x+1=0for u have put x= -1 in that equqtion you will get 0 so x= -1 value is satisfies the equationso that the answer is x= -1thank u boss
RAMCHANDRARAO10 Years agoroots for the equation ( x2+2x+1) is x=-1this equation also written as (x+1)^2=0 that implies x+1=0therefore x=-1