(x-0.5)^12=
x^12-6*x^11+33/2*x^10-55/2*x^9+495/16*x^8-99/4*x^7+231/16*x^6-99/16*x^5+495/256*x^4-55/128*x^3+33/512*x^2-3/512*x+1/4096