Respuesta :

Answer:

  2√3

Step-by-step explanation:

Multiply these binomials in the usual way:

  (1 +√3)(3 -√3) = 1(3 -√3) +√3(3 -√3)

  = 3 -√3 +3√3 -3 = (3 -3) +√3(-1 +3)

  = 2√3