The graph of y=ax3+bx2+cx+d\displaystyle {y}={a}{x}^{{3}}+{b}{x}^{{2}}+{c}{x}+{d} is shown.



Solve: ax3+bx2+cx+d=0\displaystyle {a}{x}^{{3}}+{b}{x}^{{2}}+{c}{x}+{d}={0}.

The solution(s) are x=\displaystyle {x}=. Enter your answer(s), separated by commas. If no solution exists, enter DNE.