There is one non-negative integers $x$ that satisfy

$\small x^{3}+(x+1)^{3}+(x+2)^{3}+\cdots +(x+n)^{3}=(x+(x+1)+(x+2)+\cdots +(x+n))^{2}$

For any positive integer $n>1$

Find that $x$ and write the value of $x$ as answer.