Between ti-mode and Xcas results are not the same.
Examples
TIMODE
1:
abs(2-3*i)
abs(2-3*i)
XCAS MODE
1:
abs(2-3*i)
sqrt(13)

I found a small problem
- when I re-run the worksheet, changing the xcas_mode(3) to xcas_mode(0) (line#2) the complex unit is replaced by i_i_
- the imaginary unit is being replaced by the inverted question mark (¡)
cFactor(a^3*x^2+a*x^2+a^3+a)
a*(a+¡)*(a-¡)*(x+¡)*(x-¡)
a*(a+i)*(a-i)*(x+i)*(x-i)