radexpand:true$ /* the default */ sqrt(4) => 2 OK sqrt(x^2) => abs(x) OK sqrt(4*x^2) => 2*abs(x) OK radexpand:false$ sqrt(4) => 2 OK sqrt(x^2) => sqrt(x^2) OK sqrt(4*x^2) => sqrt(4*x^2) Is this OK? Shouldn't this last case be 2*sqrt(x^2) even with radexpand:false?