Respuesta :

They are called conjugate roots

Answer:

Irrational conjugates.

Step-by-step explanation:

The given roots are

[tex](a+\sqrt{b)}   (a-\sqrt{b)}[/tex]

The two expressions are conjugate.

Here [tex]\sqrt{b}[/tex] is an irrational number.

The irrational conjugates theorem states that if a + √b is an irrational root to a polynomial, then its irrational conjugate a - √b is also a root.