Answer
$$ = {{x\,\left(90\,x^{10}+4257\,x^9+89980\,x^8+1116225\,x^7+8959500\,x^ 6+48221250\,x^5+173250000\,x^4+392906250\,x^3+458906250\,x^2- 38671875\,x-773437500\right)}\over{990}} $$
Explanation
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