Polyômes et fractions rationnelles : voir factor, expand, coeffs, tcoeff, parfrac,...
Correction:> e:=expand((x+1)^(15)); > e:=diff(e,x); > factor(e);
Correction:> factor((x+1)^(15)+1); > factor(x^(1080)-1);
Correction:> g:=x->1/(1+x); > e:=(g@@8)(x); > normal(e);