Respuesta :

Answer:

15+3sqrt(3)+5sqrt(5)+sqrt(15)

Step-by-step explanation:

(3+√5)(5+√3)

FOIL

first :3*5

outer: 3*sqrt(3)

inner: 5 sqrt(5)

last: sqrt(5) * sqrt(3) = sqrt(3*5) = sqrt(15)

Add them together

15+3sqrt(3)+5sqrt(5)+sqrt(15)

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