quo returns the euclidean quotient q of the
Euclidean division between two polynomials (decreasing power order).
If the polynomials are represented as
expressions, the variable may be specified as a third
argument.

Input :

quo(x

`^`

2+2*x +1,x)Output :

x+2

Input :

quo(y

`^`

2+2*y +1,y,y)Output :

y+2

In list representation, the quotient of x^{2}+2x+4 by x^{2}+x+2
one can also input :

quo([1,2,4],[1,1,2])

Output :

[1]

that is to say the polynomial 1.