2549.sagews

P1=PolynomialRing(ZZ,'x')
x=P1.gen()
p=x^2+1;p

x^2 + 1

P2=PolynomialRing(CC,'x')
t=P2.gen()
q=t^2+1;q

x^2 + 1.00000000000000

p.factor()

x^2 + 1

q.factor()

(x - I) * (x + I)

P1=PolynomialRing(RR,'x')
x=P1.gen()
p=x^2+1
p(0.1)

1.01000000000000

P2=PolynomialRing(CC,'x')
t=P2.gen()
q=3*t^2+t
q(5.1)

83.1300000000000