s = vt/2 = 330.5/2 = 825m

\(\Leftrightarrow3x^3+3x^2+3x+1=0\)

\(\Leftrightarrow x^3+3x^2+3x+1=-2x^3\)

\(\Leftrightarrow\left(x+1\right)^2=\left(-\sqrt[3]{2}x\right)^3\)

\(\Leftrightarrow x+1=-\sqrt[3]{2}x\)

\(\Leftrightarrow x=-\frac{1}{1+\sqrt[3]{2}}\)