WolframAlpha computational knowledge AI
expand (x+x^2 + x^3 + x^4 + x^5 + x^6 + x^7 + x^8 + x^9)*(1+x+x^2 + x^3 + x^4 + x^5 + x^6 + x^7 + x^8 + x^9)^(3-1)