(x+3)^3+11=8x+x^2 (x+9)
(x+3)^3+11=8x+x^2(x+9) x^3+9x^2+27x+27+11-8x-x^2(x+9)=0 x^3+9x^2+19x+38-x^3-9x^2=0 19x+38=0 x=-38/19 x=-2