Respuesta :

-2 sqrt(20) -sqrt(125)

-2 sqrt(4*5) - sqrt(5*25)

-2sqrt(4)*sqrt(5) - sqrt(5)sqt(25)

-2 *2*sqrt(5) - 5sqrt(5)

-4sqrt(5)-5sqrt(5)

-9sqrt(5)

-2* sqrt (20- sqrt (125) = 5.9  simplified would be (5)