poly p = <1,2,3>;
poly q;
poly r(5);
print(p);
print(q);
print(<1,2,3,4>);

r = p + q*2 + r*deg(p);
poly s = 2*r - q*p;
print(-s);
print(-s[2.5] + <1,2>);

poly t = s';
print(int(t, 3)*q + 2);

3*p == int(q,2);
s' != int(<-3.4, 2.7, 0, 7.6>,2);